From dd1569b1b36a56490b745e9f1789a4a1a59874ba Mon Sep 17 00:00:00 2001 From: Ralf Corsepius Date: Tue, 17 Nov 2009 16:58:36 +0000 Subject: Convert to unix encoding. --- cpukit/mghttpd/mongoose.c | 9450 ++++++++++++++++++++++----------------------- cpukit/mghttpd/mongoose.h | 506 +-- 2 files changed, 4978 insertions(+), 4978 deletions(-) (limited to 'cpukit/mghttpd') diff --git a/cpukit/mghttpd/mongoose.c b/cpukit/mghttpd/mongoose.c index 46348d6e39..e40bf9d378 100644 --- a/cpukit/mghttpd/mongoose.c +++ b/cpukit/mghttpd/mongoose.c @@ -1,4725 +1,4725 @@ -/* - * Copyright (c) 2004-2009 Sergey Lyubka - * Portions Copyright (c) 2009 Gilbert Wellisch - * - * Permission is hereby granted, free of charge, to any person obtaining a copy - * of this software and associated documentation files (the "Software"), to deal - * in the Software without restriction, including without limitation the rights - * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell - * copies of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE - * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, - * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN - * THE SOFTWARE. - * - * $Id$ - */ - -#if defined(_WIN32) -#define _CRT_SECURE_NO_WARNINGS /* Disable deprecation warning in VS2005 */ -#endif /* _WIN32 */ - -#ifndef _WIN32_WCE /* Some ANSI #includes are not available on Windows CE */ -#include -#include -#include -#include -#include -#endif /* !_WIN32_WCE */ - -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#if defined(_WIN32) /* Windows specific #includes and #defines */ -#define _WIN32_WINNT 0x0400 /* To make it link in VS2005 */ -#include - -#ifndef _WIN32_WCE -#include -#include -#include -#else /* _WIN32_WCE */ -/* Windows CE-specific definitions */ -#include -#define NO_CGI /* WinCE has no pipes */ -#define NO_SSI /* WinCE has no pipes */ - -#define FILENAME_MAX MAX_PATH -#define BUFSIZ 4096 -typedef long off_t; - -#define errno GetLastError() -#define strerror(x) _ultoa(x, (char *) _alloca(sizeof(x) *3 ), 10) -#endif /* _WIN32_WCE */ - -#define EPOCH_DIFF 0x019DB1DED53E8000 /* 116444736000000000 nsecs */ -#define RATE_DIFF 10000000 /* 100 nsecs */ -#define MAKEUQUAD(lo, hi) ((uint64_t)(((uint32_t)(lo)) | \ - ((uint64_t)((uint32_t)(hi))) << 32)) -#define SYS2UNIX_TIME(lo, hi) \ - (time_t) ((MAKEUQUAD((lo), (hi)) - EPOCH_DIFF) / RATE_DIFF) - -/* - * Visual Studio 6 does not know __func__ or __FUNCTION__ - * The rest of MS compilers use __FUNCTION__, not C99 __func__ - * Also use _strtoui64 on modern M$ compilers - */ -#if defined(_MSC_VER) && _MSC_VER < 1300 -#define STRX(x) #x -#define STR(x) STRX(x) -#define __func__ "line " STR(__LINE__) -#define strtoull(x, y, z) strtoul(x, y, z) -#else -#define __func__ __FUNCTION__ -#define strtoull(x, y, z) _strtoui64(x, y, z) -#endif /* _MSC_VER */ - -#define ERRNO GetLastError() -#define NO_SOCKLEN_T -#define SSL_LIB "ssleay32.dll" -#define CRYPTO_LIB "libeay32.dll" -#define DIRSEP '\\' -#define IS_DIRSEP_CHAR(c) ((c) == '/' || (c) == '\\') -#define O_NONBLOCK 0 -#define EWOULDBLOCK WSAEWOULDBLOCK -#define _POSIX_ -#define INT64_FMT "I64" - -#define SHUT_WR 1 -#define snprintf _snprintf -#define vsnprintf _vsnprintf -#define sleep(x) Sleep((x) * 1000) - -#define popen(x, y) _popen(x, y) -#define pclose(x) _pclose(x) -#define close(x) _close(x) -#define dlsym(x,y) GetProcAddress((HINSTANCE) (x), (y)) -#define RTLD_LAZY 0 -#define fseeko(x, y, z) fseek((x), (y), (z)) -#define fdopen(x, y) _fdopen((x), (y)) -#define write(x, y, z) _write((x), (y), (unsigned) z) -#define read(x, y, z) _read((x), (y), (unsigned) z) -#define flockfile(x) (void) 0 -#define funlockfile(x) (void) 0 - -#if !defined(fileno) -#define fileno(x) _fileno(x) -#endif /* !fileno MINGW #defines fileno */ - -typedef HANDLE pthread_mutex_t; -typedef HANDLE pthread_cond_t; -typedef DWORD pthread_t; -#define pid_t HANDLE /* MINGW typedefs pid_t to int. Using #define here. */ - -struct timespec { - long tv_nsec; - long tv_sec; -}; - -static int pthread_mutex_lock(pthread_mutex_t *); -static int pthread_mutex_unlock(pthread_mutex_t *); - -#if defined(HAVE_STDINT) -#include -#else -typedef unsigned int uint32_t; -typedef unsigned short uint16_t; -typedef unsigned __int64 uint64_t; -typedef __int64 int64_t; -#define INT64_MAX 9223372036854775807 -#endif /* HAVE_STDINT */ - -/* - * POSIX dirent interface - */ -struct dirent { - char d_name[FILENAME_MAX]; -}; - -typedef struct DIR { - HANDLE handle; - WIN32_FIND_DATAW info; - struct dirent result; -} DIR; - -#else /* UNIX specific */ -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include -#include -#include -#include -#include -#define SSL_LIB "libssl.so" -#define CRYPTO_LIB "libcrypto.so" -#define DIRSEP '/' -#define IS_DIRSEP_CHAR(c) ((c) == '/') -#define O_BINARY 0 -#define closesocket(a) close(a) -#define mg_fopen(x, y) fopen(x, y) -#define mg_mkdir(x, y) mkdir(x, y) -#define mg_remove(x) remove(x) -#define mg_rename(x, y) rename(x, y) -#define ERRNO errno -#define INVALID_SOCKET (-1) -#define INT64_FMT PRId64 -typedef int SOCKET; - -#endif /* End of Windows and UNIX specific includes */ - -#include "mongoose.h" - -#define MONGOOSE_VERSION "2.9" -#define PASSWORDS_FILE_NAME ".htpasswd" -#define CGI_ENVIRONMENT_SIZE 4096 -#define MAX_CGI_ENVIR_VARS 64 -#define MAX_REQUEST_SIZE 8192 -#define MAX_LISTENING_SOCKETS 10 -#define MAX_CALLBACKS 20 -#define ARRAY_SIZE(array) (sizeof(array) / sizeof(array[0])) -#define DEBUG_MGS_PREFIX "*** Mongoose debug *** " - -#if defined(DEBUG) -#define DEBUG_TRACE(x) do {printf x; putchar('\n'); fflush(stdout);} while (0) -#else -#define DEBUG_TRACE(x) -#endif /* DEBUG */ - -/* - * Darwin prior to 7.0 and Win32 do not have socklen_t - */ -#ifdef NO_SOCKLEN_T -typedef int socklen_t; -#endif /* NO_SOCKLEN_T */ - -#if !defined(FALSE) -enum {FALSE, TRUE}; -#endif /* !FALSE */ - -typedef int bool_t; -typedef void * (*mg_thread_func_t)(void *); - -static const char *http_500_error = "Internal Server Error"; - -/* - * Snatched from OpenSSL includes. I put the prototypes here to be independent - * from the OpenSSL source installation. Having this, mongoose + SSL can be - * built on any system with binary SSL libraries installed. - */ -typedef struct ssl_st SSL; -typedef struct ssl_method_st SSL_METHOD; -typedef struct ssl_ctx_st SSL_CTX; - -#define SSL_ERROR_WANT_READ 2 -#define SSL_ERROR_WANT_WRITE 3 -#define SSL_FILETYPE_PEM 1 -#define CRYPTO_LOCK 1 - -/* - * Dynamically loaded SSL functionality - */ -struct ssl_func { - const char *name; /* SSL function name */ - void (*ptr)(void); /* Function pointer */ -}; - -#define SSL_free(x) (* (void (*)(SSL *)) ssl_sw[0].ptr)(x) -#define SSL_accept(x) (* (int (*)(SSL *)) ssl_sw[1].ptr)(x) -#define SSL_connect(x) (* (int (*)(SSL *)) ssl_sw[2].ptr)(x) -#define SSL_read(x,y,z) (* (int (*)(SSL *, void *, int)) \ - ssl_sw[3].ptr)((x),(y),(z)) -#define SSL_write(x,y,z) (* (int (*)(SSL *, const void *,int)) \ - ssl_sw[4].ptr)((x), (y), (z)) -#define SSL_get_error(x,y)(* (int (*)(SSL *, int)) ssl_sw[5])((x), (y)) -#define SSL_set_fd(x,y) (* (int (*)(SSL *, SOCKET)) ssl_sw[6].ptr)((x), (y)) -#define SSL_new(x) (* (SSL * (*)(SSL_CTX *)) ssl_sw[7].ptr)(x) -#define SSL_CTX_new(x) (* (SSL_CTX * (*)(SSL_METHOD *)) ssl_sw[8].ptr)(x) -#define SSLv23_server_method() (* (SSL_METHOD * (*)(void)) ssl_sw[9].ptr)() -#define SSL_library_init() (* (int (*)(void)) ssl_sw[10].ptr)() -#define SSL_CTX_use_PrivateKey_file(x,y,z) (* (int (*)(SSL_CTX *, \ - const char *, int)) ssl_sw[11].ptr)((x), (y), (z)) -#define SSL_CTX_use_certificate_file(x,y,z) (* (int (*)(SSL_CTX *, \ - const char *, int)) ssl_sw[12].ptr)((x), (y), (z)) -#define SSL_CTX_set_default_passwd_cb(x,y) \ - (* (void (*)(SSL_CTX *, mg_spcb_t)) ssl_sw[13].ptr)((x),(y)) -#define SSL_CTX_free(x) (* (void (*)(SSL_CTX *)) ssl_sw[14].ptr)(x) - -#define CRYPTO_num_locks() (* (int (*)(void)) crypto_sw[0].ptr)() -#define CRYPTO_set_locking_callback(x) \ - (* (void (*)(void (*)(int, int, const char *, int))) \ - crypto_sw[1].ptr)(x) -#define CRYPTO_set_id_callback(x) \ - (* (void (*)(unsigned long (*)(void))) crypto_sw[2].ptr)(x) - -/* - * set_ssl_option() function when called, updates this array. - * It loads SSL library dynamically and changes NULLs to the actual addresses - * of respective functions. The macros above (like SSL_connect()) are really - * just calling these functions indirectly via the pointer. - */ -static struct ssl_func ssl_sw[] = { - {"SSL_free", NULL}, - {"SSL_accept", NULL}, - {"SSL_connect", NULL}, - {"SSL_read", NULL}, - {"SSL_write", NULL}, - {"SSL_get_error", NULL}, - {"SSL_set_fd", NULL}, - {"SSL_new", NULL}, - {"SSL_CTX_new", NULL}, - {"SSLv23_server_method", NULL}, - {"SSL_library_init", NULL}, - {"SSL_CTX_use_PrivateKey_file", NULL}, - {"SSL_CTX_use_certificate_file",NULL}, - {"SSL_CTX_set_default_passwd_cb",NULL}, - {"SSL_CTX_free", NULL}, - {NULL, NULL} -}; - -/* - * Similar array as ssl_sw. These functions are located in different lib. - */ -static struct ssl_func crypto_sw[] = { - {"CRYPTO_num_locks", NULL}, - {"CRYPTO_set_locking_callback", NULL}, - {"CRYPTO_set_id_callback", NULL}, - {NULL, NULL} -}; - -/* - * Month names - */ -static const char *month_names[] = { - "Jan", "Feb", "Mar", "Apr", "May", "Jun", - "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" -}; - -/* - * Unified socket address. For IPv6 support, add IPv6 address structure - * in the union u. - */ -struct usa { - socklen_t len; - union { - struct sockaddr sa; - struct sockaddr_in sin; - } u; -}; - -/* - * Specifies a string (chunk of memory). - * Used to traverse comma separated lists of options. - */ -struct vec { - const char *ptr; - size_t len; -}; - -/* - * Structure used by mg_stat() function. Uses 64 bit file length. - */ -struct mgstat { - bool_t is_directory; /* Directory marker */ - int64_t size; /* File size */ - time_t mtime; /* Modification time */ -}; - -struct mg_option { - const char *name; - const char *description; - const char *default_value; - int index; - bool_t (*setter)(struct mg_context *, const char *); -}; - -/* - * Numeric indexes for the option values in context, ctx->options - */ -enum mg_option_index { - OPT_ROOT, OPT_INDEX_FILES, OPT_PORTS, OPT_DIR_LIST, OPT_CGI_EXTENSIONS, - OPT_CGI_INTERPRETER, OPT_CGI_ENV, OPT_SSI_EXTENSIONS, OPT_AUTH_DOMAIN, - OPT_AUTH_GPASSWD, OPT_AUTH_PUT, OPT_ACCESS_LOG, OPT_ERROR_LOG, - OPT_SSL_CERTIFICATE, OPT_ALIASES, OPT_ACL, OPT_UID, OPT_PROTECT, - OPT_SERVICE, OPT_HIDE, OPT_ADMIN_URI, OPT_MAX_THREADS, OPT_IDLE_TIME, - OPT_MIME_TYPES, - NUM_OPTIONS -}; - -/* - * Structure used to describe listening socket, or socket which was - * accept()-ed by the master thread and queued for future handling - * by the worker thread. - */ -struct socket { - SOCKET sock; /* Listening socket */ - struct usa lsa; /* Local socket address */ - struct usa rsa; /* Remote socket address */ - bool_t is_ssl; /* Is socket SSL-ed */ -}; - -/* - * Callback function, and where it is bound to - */ -struct callback { - char *uri_regex; /* URI regex to handle */ - mg_callback_t func; /* user callback */ - bool_t is_auth; /* func is auth checker */ - int status_code; /* error code to handle */ - void *user_data; /* opaque user data */ -}; - -/* - * Mongoose context - */ -struct mg_context { - int stop_flag; /* Should we stop event loop */ - SSL_CTX *ssl_ctx; /* SSL context */ - - FILE *access_log; /* Opened access log */ - FILE *error_log; /* Opened error log */ - - struct socket listeners[MAX_LISTENING_SOCKETS]; - int num_listeners; - - struct callback callbacks[MAX_CALLBACKS]; - int num_callbacks; - - char *options[NUM_OPTIONS]; /* Configured opions */ - pthread_mutex_t opt_mutex[NUM_OPTIONS]; /* Option protector */ - - int max_threads; /* Maximum number of threads */ - int num_threads; /* Number of threads */ - int num_idle; /* Number of idle threads */ - pthread_mutex_t thr_mutex; /* Protects (max|num)_threads */ - pthread_cond_t thr_cond; - pthread_mutex_t bind_mutex; /* Protects bind operations */ - - struct socket queue[20]; /* Accepted sockets */ - int sq_head; /* Head of the socket queue */ - int sq_tail; /* Tail of the socket queue */ - pthread_cond_t empty_cond; /* Socket queue empty condvar */ - pthread_cond_t full_cond; /* Socket queue full condvar */ - - mg_spcb_t ssl_password_callback; - mg_callback_t log_callback; -}; - -/* - * Client connection. - */ -struct mg_connection { - struct mg_request_info request_info; - struct mg_context *ctx; /* Mongoose context we belong to*/ - SSL *ssl; /* SSL descriptor */ - struct socket client; /* Connected client */ - time_t birth_time; /* Time connection was accepted */ - bool_t free_post_data; /* post_data was malloc-ed */ - bool_t embedded_auth; /* Used for authorization */ - int64_t num_bytes_sent; /* Total bytes sent to client */ -}; - -/* - * Print error message to the opened error log stream. - */ -static void -cry(struct mg_connection *conn, const char *fmt, ...) -{ - char buf[BUFSIZ]; - va_list ap; - - va_start(ap, fmt); - (void) vsnprintf(buf, sizeof(buf), fmt, ap); - conn->ctx->log_callback(conn, &conn->request_info, buf); - va_end(ap); -} - -/* - * Return fake connection structure. Used for logging, if connection - * is not applicable at the moment of logging. - */ -static struct mg_connection * -fc(struct mg_context *ctx) -{ - static struct mg_connection fake_connection; - fake_connection.ctx = ctx; - return (&fake_connection); -} - -/* - * If an embedded code does not intercept logging by calling - * mg_set_log_callback(), this function is used for logging. It prints - * stuff to the conn->error_log, which is stderr unless "error_log" - * option was set. - */ -static void -builtin_error_log(struct mg_connection *conn, - const struct mg_request_info *request_info, void *message) -{ - FILE *fp; - time_t timestamp; - - fp = conn->ctx->error_log; - flockfile(fp); - - timestamp = time(NULL); - - (void) fprintf(fp, - "[%010lu] [error] [client %s] ", - (unsigned long) timestamp, - inet_ntoa(conn->client.rsa.u.sin.sin_addr)); - - if (request_info->request_method != NULL) - (void) fprintf(fp, "%s %s: ", - request_info->request_method, - request_info->uri); - - (void) fprintf(fp, "%s", (char *) message); - - fputc('\n', fp); - - funlockfile(fp); -} - -const char * -mg_version(void) -{ - return (MONGOOSE_VERSION); -} - -static void -mg_strlcpy(register char *dst, register const char *src, size_t n) -{ - for (; *src != '\0' && n > 1; n--) - *dst++ = *src++; - *dst = '\0'; -} - -static int -lowercase(const char *s) -{ - return (tolower(* (unsigned char *) s)); -} - -static int -mg_strncasecmp(const char *s1, const char *s2, size_t len) -{ - int diff = 0; - - if (len > 0) - do { - diff = lowercase(s1++) - lowercase(s2++); - } while (diff == 0 && s1[-1] != '\0' && --len > 0); - - return (diff); -} - -static int -mg_strcasecmp(const char *s1, const char *s2) -{ - int diff; - - do { - diff = lowercase(s1++) - lowercase(s2++); - } while (diff == 0 && s1[-1] != '\0'); - - return (diff); -} - -static char * -mg_strndup(const char *ptr, size_t len) -{ - char *p; - - if ((p = (char *) malloc(len + 1)) != NULL) - mg_strlcpy(p, ptr, len + 1); - - return (p); - -} - -static char * -mg_strdup(const char *str) -{ - return (mg_strndup(str, strlen(str))); -} - -/* - * Like snprintf(), but never returns negative value, or the value - * that is larger than a supplied buffer. - * Thanks to Adam Zeldis to pointing snprintf()-caused vulnerability - * in his audit report. - */ -static int -mg_vsnprintf(struct mg_connection *conn, - char *buf, size_t buflen, const char *fmt, va_list ap) -{ - int n; - - if (buflen == 0) - return (0); - - n = vsnprintf(buf, buflen, fmt, ap); - - if (n < 0) { - cry(conn, "vsnprintf error"); - n = 0; - } else if (n >= (int) buflen) { - cry(conn, "truncating vsnprintf buffer: [%.*s]", - n > 200 ? 200 : n, buf); - n = (int) buflen - 1; - } - buf[n] = '\0'; - - return (n); -} - -static int -mg_snprintf(struct mg_connection *conn, - char *buf, size_t buflen, const char *fmt, ...) -{ - va_list ap; - int n; - - va_start(ap, fmt); - n = mg_vsnprintf(conn, buf, buflen, fmt, ap); - va_end(ap); - - return (n); -} - -/* - * Convert string representing a boolean value to a boolean value - */ -static bool_t -is_true(const char *str) -{ - static const char *trues[] = {"1", "yes", "true", "ja", NULL}; - int i; - - for (i = 0; trues[i] != NULL; i++) - if (str != NULL && mg_strcasecmp(str, trues[i]) == 0) - return (TRUE); - - return (FALSE); -} - -/* - * Skip the characters until one of the delimiters characters found. - * 0-terminate resulting word. Skip the rest of the delimiters if any. - * Advance pointer to buffer to the next word. Return found 0-terminated word. - */ -static char * -skip(char **buf, const char *delimiters) -{ - char *p, *begin_word, *end_word, *end_delimiters; - - begin_word = *buf; - end_word = begin_word + strcspn(begin_word, delimiters); - end_delimiters = end_word + strspn(end_word, delimiters); - - for (p = end_word; p < end_delimiters; p++) - *p = '\0'; - - *buf = end_delimiters; - - return (begin_word); -} - -/* - * Return HTTP header value, or NULL if not found. - */ -static const char * -get_header(const struct mg_request_info *ri, const char *name) -{ - int i; - - for (i = 0; i < ri->num_headers; i++) - if (!mg_strcasecmp(name, ri->http_headers[i].name)) - return (ri->http_headers[i].value); - - return (NULL); -} - -const char * -mg_get_header(const struct mg_connection *conn, const char *name) -{ - return (get_header(&conn->request_info, name)); -} - -/* - * A helper function for traversing comma separated list of values. - * It returns a list pointer shifted to the next value, of NULL if the end - * of the list found. - * Value is stored in val vector. If value has form "x=y", then eq_val - * vector is initialized to point to the "y" part, and val vector length - * is adjusted to point only to "x". - */ -static const char * -next_option(const char *list, struct vec *val, struct vec *eq_val) -{ - if (list == NULL || *list == '\0') { - /* End of the list */ - list = NULL; - } else { - val->ptr = list; - if ((list = strchr(val->ptr, ',')) != NULL) { - /* Comma found. Store length and shift the list ptr */ - val->len = list - val->ptr; - list++; - } else { - /* This value is the last one */ - list = val->ptr + strlen(val->ptr); - val->len = list - val->ptr; - } - - if (eq_val != NULL) { - /* - * Value has form "x=y", adjust pointers and lengths - * so that val points to "x", and eq_val points to "y". - */ - eq_val->len = 0; - eq_val->ptr = memchr(val->ptr, '=', val->len); - if (eq_val->ptr != NULL) { - eq_val->ptr++; /* Skip over '=' character */ - eq_val->len = val->ptr + val->len - eq_val->ptr; - val->len = (eq_val->ptr - val->ptr) - 1; - } - } - } - - return (list); -} - -#if !(defined(NO_CGI) && defined(NO_SSI)) -/* - * Verify that given file has certain extension - */ -static bool_t -match_extension(const char *path, const char *ext_list) -{ - struct vec ext_vec; - size_t path_len; - - path_len = strlen(path); - - while ((ext_list = next_option(ext_list, &ext_vec, NULL)) != NULL) - if (ext_vec.len < path_len && - mg_strncasecmp(path + path_len - ext_vec.len, - ext_vec.ptr, ext_vec.len) == 0) - return (TRUE); - - return (FALSE); -} -#endif /* !(NO_CGI && NO_SSI) */ - -/* - * Return TRUE if "uri" matches "regexp". - * '*' in the regexp means zero or more characters. - */ -static bool_t -match_regex(const char *uri, const char *regexp) -{ - if (*regexp == '\0') - return (*uri == '\0'); - - if (*regexp == '*') - do { - if (match_regex(uri, regexp + 1)) - return (TRUE); - } while (*uri++ != '\0'); - - if (*uri != '\0' && *regexp == *uri) - return (match_regex(uri + 1, regexp + 1)); - - return (FALSE); -} - -static const struct callback * -find_callback(struct mg_context *ctx, bool_t is_auth, - const char *uri, int status_code) -{ - const struct callback *cb, *found; - int i; - - found = NULL; - pthread_mutex_lock(&ctx->bind_mutex); - for (i = 0; i < ctx->num_callbacks; i++) { - cb = ctx->callbacks + i; - if ((uri != NULL && cb->uri_regex != NULL && - ((is_auth && cb->is_auth) || (!is_auth && !cb->is_auth)) && - match_regex(uri, cb->uri_regex)) || (uri == NULL && - (cb->status_code == 0 || - cb->status_code == status_code))) { - found = cb; - break; - } - } - pthread_mutex_unlock(&ctx->bind_mutex); - - return (found); -} - -/* - * For use by external application. This sets custom logging function. - */ -void -mg_set_log_callback(struct mg_context *ctx, mg_callback_t log_callback) -{ - /* If NULL is specified as a callback, revert back to the default */ - if (log_callback == NULL) - ctx->log_callback = &builtin_error_log; - else - ctx->log_callback = log_callback; -} - -/* - * Send error message back to the client. - */ -static void -send_error(struct mg_connection *conn, int status, const char *reason, - const char *fmt, ...) -{ - const struct callback *cb; - char buf[BUFSIZ]; - va_list ap; - int len; - - conn->request_info.status_code = status; - - /* If error handler is set, call it. Otherwise, send error message */ - if ((cb = find_callback(conn->ctx, FALSE, NULL, status)) != NULL) { - cb->func(conn, &conn->request_info, cb->user_data); - } else { - buf[0] = '\0'; - len = 0; - - /* Errors 1xx, 204 and 304 MUST NOT send a body */ - if (status > 199 && status != 204 && status != 304) { - len = mg_snprintf(conn, buf, sizeof(buf), - "Error %d: %s\n", status, reason); - cry(conn, "%s", buf); - - va_start(ap, fmt); - len += mg_vsnprintf(conn, buf + len, sizeof(buf) - len, - fmt, ap); - va_end(ap); - conn->num_bytes_sent = len; - } - - (void) mg_printf(conn, - "HTTP/1.1 %d %s\r\n" - "Content-Type: text/plain\r\n" - "Content-Length: %d\r\n" - "Connection: close\r\n" - "\r\n%s", status, reason, len, buf); - } -} - -#ifdef _WIN32 -static int -pthread_mutex_init(pthread_mutex_t *mutex, void *unused) -{ - unused = NULL; - *mutex = CreateMutex(NULL, FALSE, NULL); - return (*mutex == NULL ? -1 : 0); -} - -static int -pthread_mutex_destroy(pthread_mutex_t *mutex) -{ - return (CloseHandle(*mutex) == 0 ? -1 : 0); -} - -static int -pthread_mutex_lock(pthread_mutex_t *mutex) -{ - return (WaitForSingleObject(*mutex, INFINITE) == WAIT_OBJECT_0? 0 : -1); -} - -static int -pthread_mutex_unlock(pthread_mutex_t *mutex) -{ - return (ReleaseMutex(*mutex) == 0 ? -1 : 0); -} - -static int -pthread_cond_init(pthread_cond_t *cv, const void *unused) -{ - unused = NULL; - *cv = CreateEvent(NULL, FALSE, FALSE, NULL); - return (*cv == NULL ? -1 : 0); -} - -static int -pthread_cond_timedwait(pthread_cond_t *cv, pthread_mutex_t *mutex, - const struct timespec *ts) -{ - DWORD status; - DWORD msec = INFINITE; - time_t now; - - if (ts != NULL) { - now = time(NULL); - msec = 1000 * (now > ts->tv_sec ? 0 : ts->tv_sec - now); - } - - (void) ReleaseMutex(*mutex); - status = WaitForSingleObject(*cv, msec); - (void) WaitForSingleObject(*mutex, INFINITE); - - return (status == WAIT_OBJECT_0 ? 0 : -1); -} - -static int -pthread_cond_wait(pthread_cond_t *cv, pthread_mutex_t *mutex) -{ - return (pthread_cond_timedwait(cv, mutex, NULL)); -} - -static int -pthread_cond_signal(pthread_cond_t *cv) -{ - return (SetEvent(*cv) == 0 ? -1 : 0); -} - -static int -pthread_cond_destroy(pthread_cond_t *cv) -{ - return (CloseHandle(*cv) == 0 ? -1 : 0); -} - -static pthread_t -pthread_self(void) -{ - return (GetCurrentThreadId()); -} - -/* - * Change all slashes to backslashes. It is Windows. - */ -static void -fix_directory_separators(char *path) -{ - int i; - - for (i = 0; path[i] != '\0'; i++) { - if (path[i] == '/') - path[i] = '\\'; - /* i > 0 check is to preserve UNC paths, \\server\file.txt */ - if (path[i] == '\\' && i > 0) - while (path[i + 1] == '\\' || path[i + 1] == '/') - (void) memmove(path + i + 1, - path + i + 2, strlen(path + i + 1)); - } -} - -/* - * Encode 'path' which is assumed UTF-8 string, into UNICODE string. - * wbuf and wbuf_len is a target buffer and its length. - */ -static void -to_unicode(const char *path, wchar_t *wbuf, size_t wbuf_len) -{ - char buf[FILENAME_MAX], *p; - - mg_strlcpy(buf, path, sizeof(buf)); - fix_directory_separators(buf); - - /* Point p to the end of the file name */ - p = buf + strlen(buf) - 1; - - /* Trim trailing backslash character */ - while (p > buf && *p == '\\' && p[-1] != ':') - *p-- = '\0'; - - /* - * Protect from CGI code disclosure. - * This is very nasty hole. Windows happily opens files with - * some garbage in the end of file name. So fopen("a.cgi ", "r") - * actually opens "a.cgi", and does not return an error! - */ - if (*p == 0x20 || /* No space at the end */ - (*p == 0x2e && p > buf) || /* No '.' but allow '.' as full path */ - *p == 0x2b || /* No '+' */ - (*p & ~0x7f)) { /* And generally no non-ascii chars */ - (void) fprintf(stderr, "Rejecting suspicious path: [%s]", buf); - buf[0] = '\0'; - } - - (void) MultiByteToWideChar(CP_UTF8, 0, buf, -1, wbuf, (int) wbuf_len); -} - -#if defined(_WIN32_WCE) - -static time_t -time(time_t *ptime) -{ - time_t t; - SYSTEMTIME st; - FILETIME ft; - - GetSystemTime(&st); - SystemTimeToFileTime(&st, &ft); - t = SYS2UNIX_TIME(ft.dwLowDateTime, ft.dwHighDateTime); - - if (ptime != NULL) - *ptime = t; - - return (t); -} - -static time_t -mktime(struct tm *ptm) -{ - SYSTEMTIME st; - FILETIME ft, lft; - - st.wYear = ptm->tm_year + 1900; - st.wMonth = ptm->tm_mon + 1; - st.wDay = ptm->tm_mday; - st.wHour = ptm->tm_hour; - st.wMinute = ptm->tm_min; - st.wSecond = ptm->tm_sec; - st.wMilliseconds = 0; - - SystemTimeToFileTime(&st, &ft); - LocalFileTimeToFileTime(&ft, &lft); - return (time_t)((MAKEUQUAD(lft.dwLowDateTime, lft.dwHighDateTime) - - EPOCH_DIFF) / RATE_DIFF); -} - -static struct tm * -localtime(const time_t *ptime, struct tm *ptm) -{ - int64_t t = ((int64_t)*ptime) * RATE_DIFF + EPOCH_DIFF; - FILETIME ft, lft; - SYSTEMTIME st; - TIME_ZONE_INFORMATION tzinfo; - - if (ptm == NULL) - return NULL; - - * (int64_t *) &ft = t; - FileTimeToLocalFileTime(&ft, &lft); - FileTimeToSystemTime(&lft, &st); - ptm->tm_year = st.wYear - 1900; - ptm->tm_mon = st.wMonth - 1; - ptm->tm_wday = st.wDayOfWeek; - ptm->tm_mday = st.wDay; - ptm->tm_hour = st.wHour; - ptm->tm_min = st.wMinute; - ptm->tm_sec = st.wSecond; - ptm->tm_yday = 0; // hope nobody uses this - ptm->tm_isdst = ((GetTimeZoneInformation(&tzinfo) == - TIME_ZONE_ID_DAYLIGHT) ? 1 : 0); - - return ptm; -} - -static size_t -strftime(char *dst, size_t dst_size, const char *fmt, const struct tm *tm) -{ - (void) snprintf(dst, dst_size, "implement strftime() for WinCE"); - return (0); -} -#endif - -static int -mg_rename(const char* oldname, const char* newname) -{ - wchar_t woldbuf[FILENAME_MAX]; - wchar_t wnewbuf[FILENAME_MAX]; - - to_unicode(oldname, woldbuf, ARRAY_SIZE(woldbuf)); - to_unicode(newname, wnewbuf, ARRAY_SIZE(wnewbuf)); - - return (MoveFileW(woldbuf, wnewbuf) ? 0 : -1); -} - - -static FILE * -mg_fopen(const char *path, const char *mode) -{ - wchar_t wbuf[FILENAME_MAX], wmode[20]; - - to_unicode(path, wbuf, ARRAY_SIZE(wbuf)); - MultiByteToWideChar(CP_UTF8, 0, mode, -1, wmode, ARRAY_SIZE(wmode)); - - return (_wfopen(wbuf, wmode)); -} - -static int -mg_stat(const char *path, struct mgstat *stp) -{ - int ok = -1; /* Error */ - wchar_t wbuf[FILENAME_MAX]; - WIN32_FILE_ATTRIBUTE_DATA info; - - to_unicode(path, wbuf, ARRAY_SIZE(wbuf)); - - if (GetFileAttributesExW(wbuf, GetFileExInfoStandard, &info) != 0) { - stp->size = MAKEUQUAD(info.nFileSizeLow, info.nFileSizeHigh); - stp->mtime = SYS2UNIX_TIME(info.ftLastWriteTime.dwLowDateTime, - info.ftLastWriteTime.dwHighDateTime); - stp->is_directory = - info.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY; - ok = 0; /* Success */ - } - - return (ok); -} - -static int -mg_remove(const char *path) -{ - wchar_t wbuf[FILENAME_MAX]; - - to_unicode(path, wbuf, ARRAY_SIZE(wbuf)); - - return (DeleteFileW(wbuf) ? 0 : -1); -} - -static int -mg_mkdir(const char *path, int mode) -{ - char buf[FILENAME_MAX]; - wchar_t wbuf[FILENAME_MAX]; - - mode = 0; /* Unused */ - mg_strlcpy(buf, path, sizeof(buf)); - fix_directory_separators(buf); - - (void) MultiByteToWideChar(CP_UTF8, 0, buf, -1, wbuf, sizeof(wbuf)); - - return (CreateDirectoryW(wbuf, NULL) ? 0 : -1); -} - -/* - * Implementation of POSIX opendir/closedir/readdir for Windows. - */ -static DIR * -opendir(const char *name) -{ - DIR *dir = NULL; - wchar_t wpath[FILENAME_MAX]; - DWORD attrs; - - if (name == NULL) { - SetLastError(ERROR_BAD_ARGUMENTS); - } else if ((dir = (DIR *) malloc(sizeof(*dir))) == NULL) { - SetLastError(ERROR_NOT_ENOUGH_MEMORY); - } else { - to_unicode(name, wpath, ARRAY_SIZE(wpath)); - attrs = GetFileAttributesW(wpath); - if (attrs != 0xFFFFFFFF && - ((attrs & FILE_ATTRIBUTE_DIRECTORY) == FILE_ATTRIBUTE_DIRECTORY)) { - (void) wcscat(wpath, L"\\*"); - dir->handle = FindFirstFileW(wpath, &dir->info); - dir->result.d_name[0] = '\0'; - } else { - free(dir); - dir = NULL; - } - } - - return (dir); -} - -static int -closedir(DIR *dir) -{ - int result = 0; - - if (dir != NULL) { - if (dir->handle != INVALID_HANDLE_VALUE) - result = FindClose(dir->handle) ? 0 : -1; - - free(dir); - } else { - result = -1; - SetLastError(ERROR_BAD_ARGUMENTS); - } - - return (result); -} - -struct dirent * -readdir(DIR *dir) -{ - struct dirent *result = 0; - - if (dir) { - if (dir->handle != INVALID_HANDLE_VALUE) { - result = &dir->result; - (void) WideCharToMultiByte(CP_UTF8, 0, - dir->info.cFileName, -1, result->d_name, - sizeof(result->d_name), NULL, NULL); - - if (!FindNextFileW(dir->handle, &dir->info)) { - (void) FindClose(dir->handle); - dir->handle = INVALID_HANDLE_VALUE; - } - - } else { - SetLastError(ERROR_FILE_NOT_FOUND); - } - } else { - SetLastError(ERROR_BAD_ARGUMENTS); - } - - return (result); -} - -#define set_close_on_exec(fd) /* No FD_CLOEXEC on Windows */ - -static int -start_thread(struct mg_context *ctx, mg_thread_func_t func, void *param) -{ - HANDLE hThread; - - ctx = NULL; /* Unused */ - - hThread = CreateThread(NULL, 0, - (LPTHREAD_START_ROUTINE) func, param, 0, NULL); - - if (hThread != NULL) - (void) CloseHandle(hThread); - - return (hThread == NULL ? -1 : 0); -} - -static HANDLE -dlopen(const char *dll_name, int flags) -{ - wchar_t wbuf[FILENAME_MAX]; - - flags = 0; /* Unused */ - to_unicode(dll_name, wbuf, ARRAY_SIZE(wbuf)); - - return (LoadLibraryW(wbuf)); -} - -#if !defined(NO_CGI) -static int -kill(pid_t pid, int sig_num) -{ - (void) TerminateProcess(pid, sig_num); - (void) CloseHandle(pid); - return (0); -} - -static pid_t -spawn_process(struct mg_connection *conn, const char *prog, char *envblk, - char *envp[], int fd_stdin, int fd_stdout, const char *dir) -{ - HANDLE me; - char *p, *interp, cmdline[FILENAME_MAX], line[FILENAME_MAX]; - FILE *fp; - STARTUPINFOA si; - PROCESS_INFORMATION pi; - - envp = NULL; /* Unused */ - - (void) memset(&si, 0, sizeof(si)); - (void) memset(&pi, 0, sizeof(pi)); - - /* XXX redirect CGI errors to the error log file */ - si.cb = sizeof(si); - si.dwFlags = STARTF_USESTDHANDLES | STARTF_USESHOWWINDOW; - si.wShowWindow = SW_HIDE; - - me = GetCurrentProcess(); - (void) DuplicateHandle(me, (HANDLE) _get_osfhandle(fd_stdin), me, - &si.hStdInput, 0, TRUE, DUPLICATE_SAME_ACCESS); - (void) DuplicateHandle(me, (HANDLE) _get_osfhandle(fd_stdout), me, - &si.hStdOutput, 0, TRUE, DUPLICATE_SAME_ACCESS); - - /* If CGI file is a script, try to read the interpreter line */ - interp = conn->ctx->options[OPT_CGI_INTERPRETER]; - if (interp == NULL) { - line[2] = '\0'; - (void) mg_snprintf(conn, cmdline, sizeof(cmdline), "%s%c%s", - dir, DIRSEP, prog); - if ((fp = fopen(cmdline, "r")) != NULL) { - (void) fgets(line, sizeof(line), fp); - if (memcmp(line, "#!", 2) != 0) - line[2] = '\0'; - /* Trim whitespaces from interpreter name */ - for (p = &line[strlen(line) - 1]; p > line && - isspace(*p); p--) - *p = '\0'; - (void) fclose(fp); - } - interp = line + 2; - } - - if ((p = (char *) strrchr(prog, '/')) != NULL) - prog = p + 1; - - (void) mg_snprintf(conn, cmdline, sizeof(cmdline), "%s%s%s", - interp, interp[0] == '\0' ? "" : " ", prog); - - (void) mg_snprintf(conn, line, sizeof(line), "%s", dir); - fix_directory_separators(line); - - DEBUG_TRACE((DEBUG_MGS_PREFIX "%s: Running [%s]", __func__, cmdline)); - if (CreateProcessA(NULL, cmdline, NULL, NULL, TRUE, - CREATE_NEW_PROCESS_GROUP, envblk, line, &si, &pi) == 0) { - cry(conn, "%s: CreateProcess(%s): %d", - __func__, cmdline, ERRNO); - pi.hProcess = (pid_t) -1; - } else { - (void) close(fd_stdin); - (void) close(fd_stdout); - } - - (void) CloseHandle(si.hStdOutput); - (void) CloseHandle(si.hStdInput); - (void) CloseHandle(pi.hThread); - - return ((pid_t) pi.hProcess); -} - -static int -pipe(int *fds) -{ - return (_pipe(fds, BUFSIZ, _O_BINARY)); -} -#endif /* !NO_CGI */ - -static int -set_non_blocking_mode(struct mg_connection *conn, SOCKET sock) -{ - unsigned long on = 1; - - conn = NULL; /* unused */ - return (ioctlsocket(sock, FIONBIO, &on)); -} - -#else - -static int -mg_stat(const char *path, struct mgstat *stp) -{ - struct stat st; - int ok; - - if (stat(path, &st) == 0) { - ok = 0; - stp->size = st.st_size; - stp->mtime = st.st_mtime; - stp->is_directory = S_ISDIR(st.st_mode); - } else { - ok = -1; - } - - return (ok); -} - -static void -set_close_on_exec(int fd) -{ - (void) fcntl(fd, F_SETFD, FD_CLOEXEC); -} - -static int -start_thread(struct mg_context *ctx, mg_thread_func_t func, void *param) -{ - pthread_t thread_id; - pthread_attr_t attr; - int retval; - - (void) pthread_attr_init(&attr); - (void) pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED); - - if ((retval = pthread_create(&thread_id, &attr, func, param)) != 0) - cry(fc(ctx), "%s: %s", __func__, strerror(retval)); - - return (retval); -} - -#ifndef NO_CGI -static pid_t -spawn_process(struct mg_connection *conn, const char *prog, char *envblk, - char *envp[], int fd_stdin, int fd_stdout, const char *dir) -{ - pid_t pid; - const char *interp; - - envblk = NULL; /* unused */ - - if ((pid = fork()) == -1) { - /* Parent */ - send_error(conn, 500, http_500_error, - "fork(): %s", strerror(ERRNO)); - } else if (pid == 0) { - /* Child */ - if (chdir(dir) != 0) { - cry(conn, "%s: chdir(%s): %s", - __func__, dir, strerror(ERRNO)); - } else if (dup2(fd_stdin, 0) == -1) { - cry(conn, "%s: dup2(stdin, %d): %s", - __func__, fd_stdin, strerror(ERRNO)); - } else if (dup2(fd_stdout, 1) == -1) { - cry(conn, "%s: dup2(stdout, %d): %s", - __func__, fd_stdout, strerror(ERRNO)); - } else { - /* If error file is specified, send errors there */ - if (conn->ctx->error_log != NULL) - (void) dup2(fileno(conn->ctx->error_log), 2); - - (void) close(fd_stdin); - (void) close(fd_stdout); - - /* Execute CGI program */ - interp = conn->ctx->options[OPT_CGI_INTERPRETER]; - if (interp == NULL) { - (void) execle(prog, prog, NULL, envp); - cry(conn, "%s: execle(%s): %s", - __func__, prog, strerror(ERRNO)); - } else { - (void) execle(interp, interp, prog, NULL, envp); - cry(conn, "%s: execle(%s %s): %s", - __func__, interp, prog, strerror(ERRNO)); - } - } - exit(EXIT_FAILURE); - } else { - /* Parent. Close stdio descriptors */ - (void) close(fd_stdin); - (void) close(fd_stdout); - } - - return (pid); -} -#endif /* !NO_CGI */ - -static int -set_non_blocking_mode(struct mg_connection *conn, SOCKET sock) -{ - int flags, ok = -1; - - if ((flags = fcntl(sock, F_GETFL, 0)) == -1) { - cry(conn, "%s: fcntl(F_GETFL): %d", __func__, ERRNO); - } else if (fcntl(sock, F_SETFL, flags | O_NONBLOCK) != 0) { - cry(conn, "%s: fcntl(F_SETFL): %d", __func__, ERRNO); - } else { - ok = 0; /* Success */ - } - - return (ok); -} -#endif /* _WIN32 */ - -static void -lock_option(struct mg_context *ctx, int opt_index) -{ - if (pthread_mutex_lock(&ctx->opt_mutex[opt_index]) != 0) - cry(fc(ctx), "pthread_mutex_lock: %s", strerror(ERRNO)); -} - -static void -unlock_option(struct mg_context *ctx, int opt_index) -{ - if (pthread_mutex_unlock(&ctx->opt_mutex[opt_index]) != 0) - cry(fc(ctx), "pthread_mutex_unlock: %s", strerror(ERRNO)); -} - -/* - * Write data to the IO channel - opened file descriptor, socket or SSL - * descriptor. Return number of bytes written. - */ -static int64_t -push(FILE *fp, SOCKET sock, SSL *ssl, const char *buf, int64_t len) -{ - int64_t sent; - int n, k; - - sent = 0; - while (sent < len) { - - /* How many bytes we send in this iteration */ - k = len - sent > INT_MAX ? INT_MAX : (int) (len - sent); - - if (ssl != NULL) { - n = SSL_write(ssl, buf + sent, k); - } else if (fp != NULL) { - n = fwrite(buf + sent, 1, k, fp); - if (ferror(fp)) - n = -1; - } else { - n = send(sock, buf + sent, k, 0); - } - - if (n < 0) - break; - - sent += n; - } - - return (sent); -} - -/* - * Read from IO channel - opened file descriptor, socket, or SSL descriptor. - * Return number of bytes read. - */ -static int -pull(FILE *fp, SOCKET sock, SSL *ssl, char *buf, int len) -{ - int nread; - - if (ssl != NULL) { - nread = SSL_read(ssl, buf, len); - } else if (fp != NULL) { - nread = fread(buf, 1, (size_t) len, fp); - if (ferror(fp)) - nread = -1; - } else { - nread = recv(sock, buf, (size_t) len, 0); - } - - return (nread); -} - -int -mg_write(struct mg_connection *conn, const void *buf, int len) -{ - assert(len >= 0); - return ((int) push(NULL, conn->client.sock, conn->ssl, - (const char *) buf, (int64_t) len)); -} - -int -mg_printf(struct mg_connection *conn, const char *fmt, ...) -{ - char buf[MAX_REQUEST_SIZE]; - int len; - va_list ap; - - va_start(ap, fmt); - len = mg_vsnprintf(conn, buf, sizeof(buf), fmt, ap); - va_end(ap); - - return (mg_write(conn, buf, len)); -} - -/* - * Return content length of the request, or -1 constant if - * Content-Length header is not set. - */ -static int64_t -get_content_length(const struct mg_connection *conn) -{ - const char *cl = mg_get_header(conn, "Content-Length"); - return (cl == NULL ? -1 : strtoll(cl, NULL, 10)); -} - -/* - * URL-decode input buffer into destination buffer. - * 0-terminate the destination buffer. Return the length of decoded data. - * form-url-encoded data differs from URI encoding in a way that it - * uses '+' as character for space, see RFC 1866 section 8.2.1 - * http://ftp.ics.uci.edu/pub/ietf/html/rfc1866.txt - */ -static size_t -url_decode(const char *src, size_t src_len, char *dst, size_t dst_len, - bool_t is_form_url_encoded) -{ - size_t i, j; - int a, b; -#define HEXTOI(x) (isdigit(x) ? x - '0' : x - 'W') - - for (i = j = 0; i < src_len && j < dst_len - 1; i++, j++) { - if (src[i] == '%' && - isxdigit(* (unsigned char *) (src + i + 1)) && - isxdigit(* (unsigned char *) (src + i + 2))) { - a = tolower(* (unsigned char *) (src + i + 1)); - b = tolower(* (unsigned char *) (src + i + 2)); - dst[j] = ((HEXTOI(a) << 4) | HEXTOI(b)) & 0xff; - i += 2; - } else if (is_form_url_encoded && src[i] == '+') { - dst[j] = ' '; - } else { - dst[j] = src[i]; - } - } - - dst[j] = '\0'; /* Null-terminate the destination */ - - return (j); -} - -/* - * Search for a form variable in a given buffer. - * Semantic is the same as for mg_get_var(). - */ -static char * -get_var(const char *name, const char *buf, size_t buf_len) -{ - const char *p, *e, *s; - char *val; - size_t var_len, len; - - var_len = strlen(name); - e = buf + buf_len; - val = NULL; - - /* buf is "var1=val1&var2=val2...". Find variable first */ - for (p = buf; p + var_len < e; p++) - if ((p == buf || p[-1] == '&') && p[var_len] == '=' && - !mg_strncasecmp(name, p, var_len)) { - - /* Point p to variable value */ - p += var_len + 1; - - /* Point s to the end of the value */ - s = (const char *) memchr(p, '&', e - p); - if (s == NULL) - s = e; - - /* Try to allocate the buffer */ - len = s - p; - if ((val = (char *) malloc(len + 1)) != NULL) - (void) url_decode(p, len, val, len + 1, TRUE); - break; - } - - return (val); -} - -/* - * Free the pointer returned by mg_get_var(). This is needed for languages - * like python, to have an ability to free allocated data without - * loading C runtime library and calling free(). - */ -void -mg_free(char *data) -{ - free(data); -} - -/* - * Return form data variable. - * It can be specified in query string, or in the POST data. - * Return NULL if the variable not found, or allocated 0-terminated value. - * It is caller's responsibility to free the returned value. - */ -char * -mg_get_var(const struct mg_connection *conn, const char *name) -{ - const struct mg_request_info *ri = &conn->request_info; - char *v1, *v2; - - v1 = v2 = NULL; - - /* Look in both query_string and POST data */ - if (ri->query_string != NULL) - v1 = get_var(name, ri->query_string, strlen(ri->query_string)); - if (ri->post_data_len > 0) - v2 = get_var(name, ri->post_data, ri->post_data_len); - - /* If they both have queried variable, POST data wins */ - if (v1 != NULL && v2 != NULL) - free(v1); - - return (v2 == NULL ? v1 : v2); -} - -/* - * Transform URI to the file name. - */ -static void -convert_uri_to_file_name(struct mg_connection *conn, const char *uri, - char *buf, size_t buf_len) -{ - struct mg_context *ctx = conn->ctx; - struct vec uri_vec, path_vec; - const char *list; - - lock_option(ctx, OPT_ROOT); - mg_snprintf(conn, buf, buf_len, "%s%s", ctx->options[OPT_ROOT], uri); - unlock_option(ctx, OPT_ROOT); - - /* If requested URI has aliased prefix, use alternate root */ - lock_option(ctx, OPT_ALIASES); - list = ctx->options[OPT_ALIASES]; - - while ((list = next_option(list, &uri_vec, &path_vec)) != NULL) { - if (memcmp(uri, uri_vec.ptr, uri_vec.len) == 0) { - (void) mg_snprintf(conn, buf, buf_len, "%.*s%s", - path_vec.len, path_vec.ptr, uri + uri_vec.len); - break; - } - } - unlock_option(ctx, OPT_ALIASES); - -#ifdef _WIN32 - fix_directory_separators(buf); -#endif /* _WIN32 */ - - DEBUG_TRACE((DEBUG_MGS_PREFIX "%s: [%s] -> [%s]", __func__, uri, buf)); -} - -/* - * Setup listening socket on given address, return socket. - * Address format: [local_ip_address:]port_number - */ -static SOCKET -mg_open_listening_port(struct mg_context *ctx, const char *str, struct usa *usa) -{ - SOCKET sock; - int on = 1, a, b, c, d, port; - - /* MacOS needs that. If we do not zero it, bind() will fail. */ - (void) memset(usa, 0, sizeof(*usa)); - - if (sscanf(str, "%d.%d.%d.%d:%d", &a, &b, &c, &d, &port) == 5) { - /* IP address to bind to is specified */ - usa->u.sin.sin_addr.s_addr = - htonl((a << 24) | (b << 16) | (c << 8) | d); - } else if (sscanf(str, "%d", &port) == 1) { - /* Only port number is specified. Bind to all addresses */ - usa->u.sin.sin_addr.s_addr = htonl(INADDR_ANY); - } else { - return (INVALID_SOCKET); - } - - usa->len = sizeof(usa->u.sin); - usa->u.sin.sin_family = AF_INET; - usa->u.sin.sin_port = htons((uint16_t) port); - - if ((sock = socket(PF_INET, SOCK_STREAM, 6)) != INVALID_SOCKET && - setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, - (char *) &on, sizeof(on)) == 0 && - bind(sock, &usa->u.sa, usa->len) == 0 && - listen(sock, 20) == 0) { - /* Success */ - set_close_on_exec(sock); - } else { - /* Error */ - cry(fc(ctx), "%s(%d): %s", __func__, port, strerror(ERRNO)); - if (sock != INVALID_SOCKET) - (void) closesocket(sock); - sock = INVALID_SOCKET; - } - - return (sock); -} - -/* - * Check whether full request is buffered. Return: - * -1 if request is malformed - * 0 if request is not yet fully buffered - * >0 actual request length, including last \r\n\r\n - */ -static int -get_request_len(const char *buf, size_t buflen) -{ - const char *s, *e; - int len = 0; - - for (s = buf, e = s + buflen - 1; len <= 0 && s < e; s++) - /* Control characters are not allowed but >=128 is. */ - if (!isprint(* (unsigned char *) s) && *s != '\r' && - *s != '\n' && * (unsigned char *) s < 128) - len = -1; - else if (s[0] == '\n' && s[1] == '\n') - len = (int) (s - buf) + 2; - else if (s[0] == '\n' && &s[1] < e && - s[1] == '\r' && s[2] == '\n') - len = (int) (s - buf) + 3; - - return (len); -} - -/* - * Convert month to the month number. Return -1 on error, or month number - */ -static int -montoi(const char *s) -{ - size_t i; - - for (i = 0; i < sizeof(month_names) / sizeof(month_names[0]); i++) - if (!strcmp(s, month_names[i])) - return ((int) i); - - return (-1); -} - -/* - * Parse date-time string, and return the corresponding time_t value - */ -static time_t -date_to_epoch(const char *s) -{ - time_t current_time; - struct tm tm, *tmp; - char mon[32]; - int sec, min, hour, mday, month, year; - - (void) memset(&tm, 0, sizeof(tm)); - sec = min = hour = mday = month = year = 0; - - if (((sscanf(s, "%d/%3s/%d %d:%d:%d", - &mday, mon, &year, &hour, &min, &sec) == 6) || - (sscanf(s, "%d %3s %d %d:%d:%d", - &mday, mon, &year, &hour, &min, &sec) == 6) || - (sscanf(s, "%*3s, %d %3s %d %d:%d:%d", - &mday, mon, &year, &hour, &min, &sec) == 6) || - (sscanf(s, "%d-%3s-%d %d:%d:%d", - &mday, mon, &year, &hour, &min, &sec) == 6)) && - (month = montoi(mon)) != -1) { - tm.tm_mday = mday; - tm.tm_mon = month; - tm.tm_year = year; - tm.tm_hour = hour; - tm.tm_min = min; - tm.tm_sec = sec; - } - - if (tm.tm_year > 1900) - tm.tm_year -= 1900; - else if (tm.tm_year < 70) - tm.tm_year += 100; - - /* Set Daylight Saving Time field */ - current_time = time(NULL); - tmp = localtime(¤t_time); - tm.tm_isdst = tmp->tm_isdst; - - return (mktime(&tm)); -} - -/* - * Protect against directory disclosure attack by removing '..', - * excessive '/' and '\' characters - */ -static void -remove_double_dots_and_double_slashes(char *s) -{ - char *p = s; - - while (*s != '\0') { - *p++ = *s++; - if (s[-1] == '/' || s[-1] == '\\') { - /* Skip all following slashes and backslashes */ - while (*s == '/' || *s == '\\') - s++; - - /* Skip all double-dots */ - while (*s == '.' && s[1] == '.') - s += 2; - } - } - *p = '\0'; -} - -/* - * Built-in mime types - */ -static const struct { - const char *extension; - size_t ext_len; - const char *mime_type; - size_t mime_type_len; -} mime_types[] = { - {".html", 5, "text/html", 9}, - {".htm", 4, "text/html", 9}, - {".shtm", 5, "text/html", 9}, - {".shtml", 6, "text/html", 9}, - {".css", 4, "text/css", 8}, - {".js", 3, "application/x-javascript", 24}, - {".ico", 4, "image/x-icon", 12}, - {".gif", 4, "image/gif", 9}, - {".jpg", 4, "image/jpeg", 10}, - {".jpeg", 5, "image/jpeg", 10}, - {".png", 4, "image/png", 9}, - {".svg", 4, "image/svg+xml", 13}, - {".torrent", 8, "application/x-bittorrent", 24}, - {".wav", 4, "audio/x-wav", 11}, - {".mp3", 4, "audio/x-mp3", 11}, - {".mid", 4, "audio/mid", 9}, - {".m3u", 4, "audio/x-mpegurl", 15}, - {".ram", 4, "audio/x-pn-realaudio", 20}, - {".xml", 4, "text/xml", 8}, - {".xslt", 5, "application/xml", 15}, - {".ra", 3, "audio/x-pn-realaudio", 20}, - {".doc", 4, "application/msword", 19}, - {".exe", 4, "application/octet-stream", 24}, - {".zip", 4, "application/x-zip-compressed", 28}, - {".xls", 4, "application/excel", 17}, - {".tgz", 4, "application/x-tar-gz", 20}, - {".tar", 4, "application/x-tar", 17}, - {".gz", 3, "application/x-gunzip", 20}, - {".arj", 4, "application/x-arj-compressed", 28}, - {".rar", 4, "application/x-arj-compressed", 28}, - {".rtf", 4, "application/rtf", 15}, - {".pdf", 4, "application/pdf", 15}, - {".swf", 4, "application/x-shockwave-flash",29}, - {".mpg", 4, "video/mpeg", 10}, - {".mpeg", 5, "video/mpeg", 10}, - {".asf", 4, "video/x-ms-asf", 14}, - {".avi", 4, "video/x-msvideo", 15}, - {".bmp", 4, "image/bmp", 9}, - {NULL, 0, NULL, 0} -}; - -/* - * Look at the "path" extension and figure what mime type it has. - * Store mime type in the vector. - */ -static void -get_mime_type(struct mg_context *ctx, const char *path, struct vec *vec) -{ - struct vec ext_vec, mime_vec; - const char *list, *ext; - size_t i, path_len; - - path_len = strlen(path); - - /* - * Scan user-defined mime types first, in case user wants to - * override default mime types. - */ - lock_option(ctx, OPT_MIME_TYPES); - list = ctx->options[OPT_MIME_TYPES]; - while ((list = next_option(list, &ext_vec, &mime_vec)) != NULL) { - /* ext now points to the path suffix */ - ext = path + path_len - ext_vec.len; - if (mg_strncasecmp(ext, ext_vec.ptr, ext_vec.len) == 0) { - *vec = mime_vec; - unlock_option(ctx, OPT_MIME_TYPES); - return; - } - } - unlock_option(ctx, OPT_MIME_TYPES); - - /* Now scan built-in mime types */ - for (i = 0; mime_types[i].extension != NULL; i++) { - ext = path + (path_len - mime_types[i].ext_len); - if (path_len > mime_types[i].ext_len && - mg_strcasecmp(ext, mime_types[i].extension) == 0) { - vec->ptr = mime_types[i].mime_type; - vec->len = mime_types[i].mime_type_len; - return; - } - } - - /* Nothing found. Fall back to text/plain */ - vec->ptr = "text/plain"; - vec->len = 10; -} - -#ifndef HAVE_MD5 -typedef struct MD5Context { - uint32_t buf[4]; - uint32_t bits[2]; - unsigned char in[64]; -} MD5_CTX; - -#if __BYTE_ORDER == 1234 -#define byteReverse(buf, len) /* Nothing */ -#else -/* - * Note: this code is harmless on little-endian machines. - */ -static void -byteReverse(unsigned char *buf, unsigned longs) -{ - uint32_t t; - do { - t = (uint32_t) ((unsigned) buf[3] << 8 | buf[2]) << 16 | - ((unsigned) buf[1] << 8 | buf[0]); - *(uint32_t *) buf = t; - buf += 4; - } while (--longs); -} -#endif /* __BYTE_ORDER */ - -/* The four core functions - F1 is optimized somewhat */ - -/* #define F1(x, y, z) (x & y | ~x & z) */ -#define F1(x, y, z) (z ^ (x & (y ^ z))) -#define F2(x, y, z) F1(z, x, y) -#define F3(x, y, z) (x ^ y ^ z) -#define F4(x, y, z) (y ^ (x | ~z)) - -/* This is the central step in the MD5 algorithm. */ -#define MD5STEP(f, w, x, y, z, data, s) \ -( w += f(x, y, z) + data, w = w<>(32-s), w += x ) - -/* - * Start MD5 accumulation. Set bit count to 0 and buffer to mysterious - * initialization constants. - */ -static void -MD5Init(MD5_CTX *ctx) -{ - ctx->buf[0] = 0x67452301; - ctx->buf[1] = 0xefcdab89; - ctx->buf[2] = 0x98badcfe; - ctx->buf[3] = 0x10325476; - - ctx->bits[0] = 0; - ctx->bits[1] = 0; -} - -/* - * The core of the MD5 algorithm, this alters an existing MD5 hash to - * reflect the addition of 16 longwords of new data. MD5Update blocks - * the data and converts bytes into longwords for this routine. - */ -static void -MD5Transform(uint32_t buf[4], uint32_t const in[16]) -{ - register uint32_t a, b, c, d; - - a = buf[0]; - b = buf[1]; - c = buf[2]; - d = buf[3]; - - MD5STEP(F1, a, b, c, d, in[0] + 0xd76aa478, 7); - MD5STEP(F1, d, a, b, c, in[1] + 0xe8c7b756, 12); - MD5STEP(F1, c, d, a, b, in[2] + 0x242070db, 17); - MD5STEP(F1, b, c, d, a, in[3] + 0xc1bdceee, 22); - MD5STEP(F1, a, b, c, d, in[4] + 0xf57c0faf, 7); - MD5STEP(F1, d, a, b, c, in[5] + 0x4787c62a, 12); - MD5STEP(F1, c, d, a, b, in[6] + 0xa8304613, 17); - MD5STEP(F1, b, c, d, a, in[7] + 0xfd469501, 22); - MD5STEP(F1, a, b, c, d, in[8] + 0x698098d8, 7); - MD5STEP(F1, d, a, b, c, in[9] + 0x8b44f7af, 12); - MD5STEP(F1, c, d, a, b, in[10] + 0xffff5bb1, 17); - MD5STEP(F1, b, c, d, a, in[11] + 0x895cd7be, 22); - MD5STEP(F1, a, b, c, d, in[12] + 0x6b901122, 7); - MD5STEP(F1, d, a, b, c, in[13] + 0xfd987193, 12); - MD5STEP(F1, c, d, a, b, in[14] + 0xa679438e, 17); - MD5STEP(F1, b, c, d, a, in[15] + 0x49b40821, 22); - - MD5STEP(F2, a, b, c, d, in[1] + 0xf61e2562, 5); - MD5STEP(F2, d, a, b, c, in[6] + 0xc040b340, 9); - MD5STEP(F2, c, d, a, b, in[11] + 0x265e5a51, 14); - MD5STEP(F2, b, c, d, a, in[0] + 0xe9b6c7aa, 20); - MD5STEP(F2, a, b, c, d, in[5] + 0xd62f105d, 5); - MD5STEP(F2, d, a, b, c, in[10] + 0x02441453, 9); - MD5STEP(F2, c, d, a, b, in[15] + 0xd8a1e681, 14); - MD5STEP(F2, b, c, d, a, in[4] + 0xe7d3fbc8, 20); - MD5STEP(F2, a, b, c, d, in[9] + 0x21e1cde6, 5); - MD5STEP(F2, d, a, b, c, in[14] + 0xc33707d6, 9); - MD5STEP(F2, c, d, a, b, in[3] + 0xf4d50d87, 14); - MD5STEP(F2, b, c, d, a, in[8] + 0x455a14ed, 20); - MD5STEP(F2, a, b, c, d, in[13] + 0xa9e3e905, 5); - MD5STEP(F2, d, a, b, c, in[2] + 0xfcefa3f8, 9); - MD5STEP(F2, c, d, a, b, in[7] + 0x676f02d9, 14); - MD5STEP(F2, b, c, d, a, in[12] + 0x8d2a4c8a, 20); - - MD5STEP(F3, a, b, c, d, in[5] + 0xfffa3942, 4); - MD5STEP(F3, d, a, b, c, in[8] + 0x8771f681, 11); - MD5STEP(F3, c, d, a, b, in[11] + 0x6d9d6122, 16); - MD5STEP(F3, b, c, d, a, in[14] + 0xfde5380c, 23); - MD5STEP(F3, a, b, c, d, in[1] + 0xa4beea44, 4); - MD5STEP(F3, d, a, b, c, in[4] + 0x4bdecfa9, 11); - MD5STEP(F3, c, d, a, b, in[7] + 0xf6bb4b60, 16); - MD5STEP(F3, b, c, d, a, in[10] + 0xbebfbc70, 23); - MD5STEP(F3, a, b, c, d, in[13] + 0x289b7ec6, 4); - MD5STEP(F3, d, a, b, c, in[0] + 0xeaa127fa, 11); - MD5STEP(F3, c, d, a, b, in[3] + 0xd4ef3085, 16); - MD5STEP(F3, b, c, d, a, in[6] + 0x04881d05, 23); - MD5STEP(F3, a, b, c, d, in[9] + 0xd9d4d039, 4); - MD5STEP(F3, d, a, b, c, in[12] + 0xe6db99e5, 11); - MD5STEP(F3, c, d, a, b, in[15] + 0x1fa27cf8, 16); - MD5STEP(F3, b, c, d, a, in[2] + 0xc4ac5665, 23); - - MD5STEP(F4, a, b, c, d, in[0] + 0xf4292244, 6); - MD5STEP(F4, d, a, b, c, in[7] + 0x432aff97, 10); - MD5STEP(F4, c, d, a, b, in[14] + 0xab9423a7, 15); - MD5STEP(F4, b, c, d, a, in[5] + 0xfc93a039, 21); - MD5STEP(F4, a, b, c, d, in[12] + 0x655b59c3, 6); - MD5STEP(F4, d, a, b, c, in[3] + 0x8f0ccc92, 10); - MD5STEP(F4, c, d, a, b, in[10] + 0xffeff47d, 15); - MD5STEP(F4, b, c, d, a, in[1] + 0x85845dd1, 21); - MD5STEP(F4, a, b, c, d, in[8] + 0x6fa87e4f, 6); - MD5STEP(F4, d, a, b, c, in[15] + 0xfe2ce6e0, 10); - MD5STEP(F4, c, d, a, b, in[6] + 0xa3014314, 15); - MD5STEP(F4, b, c, d, a, in[13] + 0x4e0811a1, 21); - MD5STEP(F4, a, b, c, d, in[4] + 0xf7537e82, 6); - MD5STEP(F4, d, a, b, c, in[11] + 0xbd3af235, 10); - MD5STEP(F4, c, d, a, b, in[2] + 0x2ad7d2bb, 15); - MD5STEP(F4, b, c, d, a, in[9] + 0xeb86d391, 21); - - buf[0] += a; - buf[1] += b; - buf[2] += c; - buf[3] += d; -} - -/* - * Update context to reflect the concatenation of another buffer full - * of bytes. - */ -static void -MD5Update(MD5_CTX *ctx, unsigned char const *buf, unsigned len) -{ - uint32_t t; - - /* Update bitcount */ - - t = ctx->bits[0]; - if ((ctx->bits[0] = t + ((uint32_t) len << 3)) < t) - ctx->bits[1]++; /* Carry from low to high */ - ctx->bits[1] += len >> 29; - - t = (t >> 3) & 0x3f; /* Bytes already in shsInfo->data */ - - /* Handle any leading odd-sized chunks */ - - if (t) { - unsigned char *p = (unsigned char *) ctx->in + t; - - t = 64 - t; - if (len < t) { - memcpy(p, buf, len); - return; - } - memcpy(p, buf, t); - byteReverse(ctx->in, 16); - MD5Transform(ctx->buf, (uint32_t *) ctx->in); - buf += t; - len -= t; - } - /* Process data in 64-byte chunks */ - - while (len >= 64) { - memcpy(ctx->in, buf, 64); - byteReverse(ctx->in, 16); - MD5Transform(ctx->buf, (uint32_t *) ctx->in); - buf += 64; - len -= 64; - } - - /* Handle any remaining bytes of data. */ - - memcpy(ctx->in, buf, len); -} - -/* - * Final wrapup - pad to 64-byte boundary with the bit pattern - * 1 0* (64-bit count of bits processed, MSB-first) - */ -static void -MD5Final(unsigned char digest[16], MD5_CTX *ctx) -{ - unsigned count; - unsigned char *p; - - /* Compute number of bytes mod 64 */ - count = (ctx->bits[0] >> 3) & 0x3F; - - /* Set the first char of padding to 0x80. This is safe since there is - always at least one byte free */ - p = ctx->in + count; - *p++ = 0x80; - - /* Bytes of padding needed to make 64 bytes */ - count = 64 - 1 - count; - - /* Pad out to 56 mod 64 */ - if (count < 8) { - /* Two lots of padding: Pad the first block to 64 bytes */ - memset(p, 0, count); - byteReverse(ctx->in, 16); - MD5Transform(ctx->buf, (uint32_t *) ctx->in); - - /* Now fill the next block with 56 bytes */ - memset(ctx->in, 0, 56); - } else { - /* Pad block to 56 bytes */ - memset(p, 0, count - 8); - } - byteReverse(ctx->in, 14); - - /* Append length in bits and transform */ - ((uint32_t *) ctx->in)[14] = ctx->bits[0]; - ((uint32_t *) ctx->in)[15] = ctx->bits[1]; - - MD5Transform(ctx->buf, (uint32_t *) ctx->in); - byteReverse((unsigned char *) ctx->buf, 4); - memcpy(digest, ctx->buf, 16); - memset((char *) ctx, 0, sizeof(ctx)); /* In case it's sensitive */ -} -#endif /* !HAVE_MD5 */ - -/* - * Stringify binary data. Output buffer must be twice as big as input, - * because each byte takes 2 bytes in string representation - */ -static void -bin2str(char *to, const unsigned char *p, size_t len) -{ - static const char *hex = "0123456789abcdef"; - - for (; len--; p++) { - *to++ = hex[p[0] >> 4]; - *to++ = hex[p[0] & 0x0f]; - } - *to = '\0'; -} - -/* - * Return stringified MD5 hash for list of vectors. - * buf must point to 33-bytes long buffer - */ -static void -mg_md5(char *buf, ...) -{ - unsigned char hash[16]; - const char *p; - va_list ap; - MD5_CTX ctx; - - MD5Init(&ctx); - - va_start(ap, buf); - while ((p = va_arg(ap, const char *)) != NULL) - MD5Update(&ctx, (unsigned char *) p, (int) strlen(p)); - va_end(ap); - - MD5Final(hash, &ctx); - bin2str(buf, hash, sizeof(hash)); -} - -/* - * Check the user's password, return 1 if OK - */ -static bool_t -check_password(const char *method, const char *ha1, const char *uri, - const char *nonce, const char *nc, const char *cnonce, - const char *qop, const char *response) -{ - char ha2[32 + 1], expected_response[32 + 1]; - - /* XXX Due to a bug in MSIE, we do not compare the URI */ - /* Also, we do not check for authentication timeout */ - if (/*strcmp(dig->uri, c->ouri) != 0 || */ - strlen(response) != 32 /*|| - now - strtoul(dig->nonce, NULL, 10) > 3600 */) - return (FALSE); - - mg_md5(ha2, method, ":", uri, NULL); - mg_md5(expected_response, ha1, ":", nonce, ":", nc, - ":", cnonce, ":", qop, ":", ha2, NULL); - - return (!mg_strcasecmp(response, expected_response)); -} - -/* - * Use the global passwords file, if specified by auth_gpass option, - * or search for .htpasswd in the requested directory. - */ -static FILE * -open_auth_file(struct mg_connection *conn, const char *path) -{ - struct mg_context *ctx = conn->ctx; - char name[FILENAME_MAX]; - const char *p, *e; - struct mgstat st; - FILE *fp; - - if (ctx->options[OPT_AUTH_GPASSWD] != NULL) { - /* Use global passwords file */ - fp = mg_fopen(ctx->options[OPT_AUTH_GPASSWD], "r"); - if (fp == NULL) - cry(fc(ctx), "fopen(%s): %s", - ctx->options[OPT_AUTH_GPASSWD], strerror(ERRNO)); - } else if (!mg_stat(path, &st) && st.is_directory) { - (void) mg_snprintf(conn, name, sizeof(name), "%s%c%s", - path, DIRSEP, PASSWORDS_FILE_NAME); - fp = mg_fopen(name, "r"); - } else { - /* - * Try to find .htpasswd in requested directory. - * Given the path, create the path to .htpasswd file - * in the same directory. Find the right-most - * directory separator character first. That would be the - * directory name. If directory separator character is not - * found, 'e' will point to 'p'. - */ - for (p = path, e = p + strlen(p) - 1; e > p; e--) - if (IS_DIRSEP_CHAR(*e)) - break; - - /* - * Make up the path by concatenating directory name and - * .htpasswd file name. - */ - (void) mg_snprintf(conn, name, sizeof(name), "%.*s%c%s", - (int) (e - p), p, DIRSEP, PASSWORDS_FILE_NAME); - fp = mg_fopen(name, "r"); - } - - return (fp); -} - -/* - * Parsed Authorization: header - */ -struct ah { - char *user, *uri, *cnonce, *response, *qop, *nc, *nonce; -}; - -static bool_t -parse_auth_header(struct mg_connection *conn, char *buf, size_t buf_size, - struct ah *ah) -{ - char *name, *value, *s; - const char *auth_header; - - if ((auth_header = mg_get_header(conn, "Authorization")) == NULL || - mg_strncasecmp(auth_header, "Digest ", 7) != 0) - return (FALSE); - - /* Make modifiable copy of the auth header */ - (void) mg_strlcpy(buf, auth_header + 7, buf_size); - - s = buf; - (void) memset(ah, 0, sizeof(*ah)); - - /* Gobble initial spaces */ - while (isspace(* (unsigned char *) s)) - s++; - - /* Parse authorization header */ - for (;;) { - name = skip(&s, "="); - value = skip(&s, ", "); - - if (*value == '"') { - value++; - value[strlen(value) - 1] = '\0'; - } else if (*value == '\0') { - break; - } - - if (!strcmp(name, "username")) { - ah->user = value; - } else if (!strcmp(name, "cnonce")) { - ah->cnonce = value; - } else if (!strcmp(name, "response")) { - ah->response = value; - } else if (!strcmp(name, "uri")) { - ah->uri = value; - } else if (!strcmp(name, "qop")) { - ah->qop = value; - } else if (!strcmp(name, "nc")) { - ah->nc = value; - } else if (!strcmp(name, "nonce")) { - ah->nonce = value; - } - } - - /* CGI needs it as REMOTE_USER */ - if (ah->user != NULL) - conn->request_info.remote_user = mg_strdup(ah->user); - - return (TRUE); -} - -/* - * Authorize against the opened passwords file. Return 1 if authorized. - */ -static bool_t -authorize(struct mg_connection *conn, FILE *fp) -{ - struct ah ah; - char line[256], f_user[256], domain[256], ha1[256], - buf[MAX_REQUEST_SIZE]; - - if (!parse_auth_header(conn, buf, sizeof(buf), &ah)) - return (FALSE); - - /* Loop over passwords file */ - while (fgets(line, sizeof(line), fp) != NULL) { - - if (sscanf(line, "%[^:]:%[^:]:%s", f_user, domain, ha1) != 3) - continue; - - if (!strcmp(ah.user, f_user) && - !strcmp(domain, conn->ctx->options[OPT_AUTH_DOMAIN])) - return (check_password( - conn->request_info.request_method, ha1, - ah.uri, ah.nonce, ah.nc, ah.cnonce, - ah.qop, ah.response)); - } - - return (FALSE); -} - -/* - * Return TRUE if request is authorised, FALSE otherwise. - */ -static bool_t -check_authorization(struct mg_connection *conn, const char *path) -{ - FILE *fp; - char fname[FILENAME_MAX]; - struct vec uri_vec, filename_vec; - const char *list; - bool_t authorized; - - fp = NULL; - authorized = TRUE; - - lock_option(conn->ctx, OPT_PROTECT); - list = conn->ctx->options[OPT_PROTECT]; - while ((list = next_option(list, &uri_vec, &filename_vec)) != NULL) { - if (!memcmp(conn->request_info.uri, uri_vec.ptr, uri_vec.len)) { - (void) mg_snprintf(conn, fname, sizeof(fname), "%.*s", - filename_vec.len, filename_vec.ptr); - if ((fp = mg_fopen(fname, "r")) == NULL) - cry(conn, "%s: cannot open %s: %s", - __func__, fname, strerror(errno)); - break; - } - } - unlock_option(conn->ctx, OPT_PROTECT); - - if (fp == NULL) - fp = open_auth_file(conn, path); - - if (fp != NULL) { - authorized = authorize(conn, fp); - (void) fclose(fp); - } - - return (authorized); -} - -static void -send_authorization_request(struct mg_connection *conn) -{ - conn->request_info.status_code = 401; - (void) mg_printf(conn, - "HTTP/1.1 401 Unauthorized\r\n" - "WWW-Authenticate: Digest qop=\"auth\", " - "realm=\"%s\", nonce=\"%lu\"\r\n\r\n", - conn->ctx->options[OPT_AUTH_DOMAIN], (unsigned long) time(NULL)); -} - -static bool_t -is_authorized_for_put(struct mg_connection *conn) -{ - FILE *fp; - int ret = FALSE; - - if ((fp = mg_fopen(conn->ctx->options[OPT_AUTH_PUT], "r")) != NULL) { - set_close_on_exec(fileno(fp)); - ret = authorize(conn, fp); - (void) fclose(fp); - } - - return (ret); -} - -int -mg_modify_passwords_file(struct mg_context *ctx, const char *fname, - const char *user, const char *pass) -{ - int found; - char line[512], u[512], d[512], ha1[33], tmp[FILENAME_MAX]; - const char *domain; - FILE *fp, *fp2; - - found = 0; - fp = fp2 = NULL; - domain = ctx->options[OPT_AUTH_DOMAIN]; - - /* Regard empty password as no password - remove user record. */ - if (pass[0] == '\0') - pass = NULL; - - (void) snprintf(tmp, sizeof(tmp), "%s.tmp", fname); - - /* Create the file if does not exist */ - if ((fp = mg_fopen(fname, "a+")) != NULL) - (void) fclose(fp); - - /* Open the given file and temporary file */ - if ((fp = mg_fopen(fname, "r")) == NULL) { - cry(fc(ctx), "Cannot open %s: %s", fname, strerror(errno)); - return (0); - } else if ((fp2 = mg_fopen(tmp, "w+")) == NULL) { - cry(fc(ctx), "Cannot open %s: %s", tmp, strerror(errno)); - return (0); - } - - /* Copy the stuff to temporary file */ - while (fgets(line, sizeof(line), fp) != NULL) { - - if (sscanf(line, "%[^:]:%[^:]:%*s", u, d) != 2) - continue; - - if (!strcmp(u, user) && !strcmp(d, domain)) { - found++; - if (pass != NULL) { - mg_md5(ha1, user, ":", domain, ":", pass, NULL); - fprintf(fp2, "%s:%s:%s\n", user, domain, ha1); - } - } else { - (void) fprintf(fp2, "%s", line); - } - } - - /* If new user, just add it */ - if (!found && pass != NULL) { - mg_md5(ha1, user, ":", domain, ":", pass, NULL); - (void) fprintf(fp2, "%s:%s:%s\n", user, domain, ha1); - } - - /* Close files */ - (void) fclose(fp); - (void) fclose(fp2); - - /* Put the temp file in place of real file */ - (void) mg_remove(fname); - (void) mg_rename(tmp, fname); - - return (0); -} - -struct de { - struct mg_connection *conn; - char *file_name; - struct mgstat st; -}; - -static void -url_encode(const char *src, char *dst, size_t dst_len) -{ - const char *dont_escape = "._-$,;~()"; - const char *hex = "0123456789abcdef"; - const char *end = dst + dst_len - 1; - - for (; *src != '\0' && dst < end; src++, dst++) { - if (isalnum(*(unsigned char *) src) || - strchr(dont_escape, * (unsigned char *) src) != NULL) { - *dst = *src; - } else if (dst + 2 < end) { - dst[0] = '%'; - dst[1] = hex[(* (unsigned char *) src) >> 4]; - dst[2] = hex[(* (unsigned char *) src) & 0xf]; - dst += 2; - } - } - - *dst = '\0'; -} - -/* - * This function is called from send_directory() and prints out - * single directory entry. - */ -static void -print_dir_entry(struct de *de) -{ - char size[64], mod[64], href[FILENAME_MAX]; - - if (de->st.is_directory) { - (void) mg_snprintf(de->conn, - size, sizeof(size), "%s", "[DIRECTORY]"); - } else { - /* - * We use (signed) cast below because MSVC 6 compiler cannot - * convert unsigned __int64 to double. Sigh. - */ - if (de->st.size < 1024) - (void) mg_snprintf(de->conn, size, sizeof(size), - "%lu", (unsigned long) de->st.size); - else if (de->st.size < 1024 * 1024) - (void) mg_snprintf(de->conn, size, sizeof(size), - "%.1fk", (double) de->st.size / 1024.0); - else if (de->st.size < 1024 * 1024 * 1024) - (void) mg_snprintf(de->conn, size, sizeof(size), - "%.1fM", (double) de->st.size / 1048576); - else - (void) mg_snprintf(de->conn, size, sizeof(size), - "%.1fG", (double) de->st.size / 1073741824); - } - (void) strftime(mod, sizeof(mod), "%d-%b-%Y %H:%M", - localtime(&de->st.mtime)); - - url_encode(de->file_name, href, sizeof(href)); - - de->conn->num_bytes_sent += mg_printf(de->conn, - "%s%s" - " %s  %s\n", - de->conn->request_info.uri, href, de->st.is_directory ? "/" : "", - de->file_name, de->st.is_directory ? "/" : "", mod, size); -} - -/* - * This function is called from send_directory() and used for - * sorting direcotory entries by size, or name, or modification time. - */ -static int -compare_dir_entries(const void *p1, const void *p2) -{ - const struct de *a = (struct de *) p1, *b = (struct de *) p2; - const char *query_string = a->conn->request_info.query_string; - int cmp_result = 0; - - if (query_string == NULL) - query_string = "na"; - - if (a->st.is_directory && !b->st.is_directory) { - return (-1); /* Always put directories on top */ - } else if (!a->st.is_directory && b->st.is_directory) { - return (1); /* Always put directories on top */ - } else if (*query_string == 'n') { - cmp_result = strcmp(a->file_name, b->file_name); - } else if (*query_string == 's') { - cmp_result = a->st.size == b->st.size ? 0 : - a->st.size > b->st.size ? 1 : -1; - } else if (*query_string == 'd') { - cmp_result = a->st.mtime == b->st.mtime ? 0 : - a->st.mtime > b->st.mtime ? 1 : -1; - } - - return (query_string[1] == 'd' ? -cmp_result : cmp_result); -} - -/* - * Send directory contents. - */ -static void -send_directory(struct mg_connection *conn, const char *dir) -{ - struct dirent *dp; - DIR *dirp; - struct de *entries = NULL; - char path[FILENAME_MAX]; - int i, sort_direction, num_entries = 0, arr_size = 128; - - if ((dirp = opendir(dir)) == NULL) { - send_error(conn, 500, "Cannot open directory", - "Error: opendir(%s): %s", path, strerror(ERRNO)); - return; - } - - (void) mg_printf(conn, "%s", - "HTTP/1.1 200 OK\r\n" - "Connection: close\r\n" - "Content-Type: text/html; charset=utf-8\r\n\r\n"); - - sort_direction = conn->request_info.query_string != NULL && - conn->request_info.query_string[1] == 'd' ? 'a' : 'd'; - - while ((dp = readdir(dirp)) != NULL) { - - /* Do not show current dir and passwords file */ - if (!strcmp(dp->d_name, ".") || - !strcmp(dp->d_name, "..") || - !strcmp(dp->d_name, PASSWORDS_FILE_NAME)) - continue; - - if (entries == NULL || num_entries >= arr_size) { - arr_size *= 2; - entries = (struct de *) realloc(entries, - arr_size * sizeof(entries[0])); - } - - if (entries == NULL) { - send_error(conn, 500, "Cannot open directory", - "%s", "Error: cannot allocate memory"); - return; - } - - (void) mg_snprintf(conn, path, sizeof(path), "%s%c%s", - dir, DIRSEP, dp->d_name); - - /* - * If we don't memset stat structure to zero, mtime will have - * garbage and strftime() will segfault later on in - * print_dir_entry(). memset is required only if mg_stat() - * fails. For more details, see - * http://code.google.com/p/mongoose/issues/detail?id=79 - */ - if (mg_stat(path, &entries[num_entries].st) != 0) - (void) memset(&entries[num_entries].st, 0, - sizeof(entries[num_entries].st)); - - entries[num_entries].conn = conn; - entries[num_entries].file_name = mg_strdup(dp->d_name); - num_entries++; - } - (void) closedir(dirp); - - conn->num_bytes_sent += mg_printf(conn, - "Index of %s" - "" - "

Index of %s

"
-	    ""
-	    ""
-	    ""
-	    "",
-	    conn->request_info.uri, conn->request_info.uri,
-	    sort_direction, sort_direction, sort_direction);
-
-	/* Print first entry - link to a parent directory */
-	conn->num_bytes_sent += mg_printf(conn,
-	    ""
-	    "\n",
-	    conn->request_info.uri, "..", "Parent directory", "-", "-");
-
-	/* Sort and print directory entries */
-	qsort(entries, num_entries, sizeof(entries[0]), compare_dir_entries);
-	for (i = 0; i < num_entries; i++) {
-		print_dir_entry(&entries[i]);
-		free(entries[i].file_name);
-	}
-	free(entries);
-
-	conn->num_bytes_sent += mg_printf(conn, "%s", "
NameModifiedSize
%s %s  %s
");
-	conn->request_info.status_code = 200;
-}
-
-/*
- * Send len bytes from the opened file to the client.
- */
-static void
-send_opened_file_stream(struct mg_connection *conn, FILE *fp, int64_t len)
-{
-	char	buf[BUFSIZ];
-	int	to_read, num_read, num_written;
-
-	while (len > 0) {
-		/* Calculate how much to read from the file in the buffer */
-		to_read = sizeof(buf);
-		if ((int64_t) to_read > len)
-			to_read = (int) len;
-
-		/* Read from file, exit the loop on error */
-		if ((num_read = fread(buf, 1, to_read, fp)) == 0)
-			break;
-
-		/* Send read bytes to the client, exit the loop on error */
-		if ((num_written = mg_write(conn, buf, num_read)) != num_read)
-			break;
-
-		/* Both read and were successful, adjust counters */
-		conn->num_bytes_sent += num_written;
-		len -= num_written;
-	}
-}
-
-/*
- * Send regular file contents.
- */
-static void
-send_file(struct mg_connection *conn, const char *path, struct mgstat *stp)
-{
-	char		date[64], lm[64], etag[64], range[64];
-	const char	*fmt = "%a, %d %b %Y %H:%M:%S %Z", *msg = "OK", *hdr;
-	time_t		curtime = time(NULL);
-	int64_t		cl, r1, r2;
-	struct vec	mime_vec;
-	FILE		*fp;
-	int		n;
-
-	get_mime_type(conn->ctx, path, &mime_vec);
-	cl = stp->size;
-	conn->request_info.status_code = 200;
-	range[0] = '\0';
-
-	if ((fp = mg_fopen(path, "rb")) == NULL) {
-		send_error(conn, 500, http_500_error,
-		    "fopen(%s): %s", path, strerror(ERRNO));
-		return;
-	}
-	set_close_on_exec(fileno(fp));
-
-	/* If Range: header specified, act accordingly */
-	r1 = r2 = 0;
-	hdr = mg_get_header(conn, "Range");
-	if (hdr != NULL && (n = sscanf(hdr,
-	    "bytes=%" INT64_FMT "-%" INT64_FMT, &r1, &r2)) > 0) {
-		conn->request_info.status_code = 206;
-		(void) fseeko(fp, (off_t) r1, SEEK_SET);
-		cl = n == 2 ? r2 - r1 + 1: cl - r1;
-		(void) mg_snprintf(conn, range, sizeof(range),
-		    "Content-Range: bytes "
-		    "%" INT64_FMT "-%"
-		    INT64_FMT "/%" INT64_FMT "\r\n",
-		    r1, r1 + cl - 1, stp->size);
-		msg = "Partial Content";
-	}
-
-	/* Prepare Etag, Date, Last-Modified headers */
-	(void) strftime(date, sizeof(date), fmt, localtime(&curtime));
-	(void) strftime(lm, sizeof(lm), fmt, localtime(&stp->mtime));
-	(void) mg_snprintf(conn, etag, sizeof(etag), "%lx.%lx",
-	    (unsigned long) stp->mtime, (unsigned long) stp->size);
-
-	(void) mg_printf(conn,
-	    "HTTP/1.1 %d %s\r\n"
-	    "Date: %s\r\n"
-	    "Last-Modified: %s\r\n"
-	    "Etag: \"%s\"\r\n"
-	    "Content-Type: %.*s\r\n"
-	    "Content-Length: %" INT64_FMT "\r\n"
-	    "Connection: close\r\n"
-	    "Accept-Ranges: bytes\r\n"
-	    "%s\r\n",
-	    conn->request_info.status_code, msg, date, lm, etag,
-	    mime_vec.len, mime_vec.ptr, cl, range);
-
-	if (strcmp(conn->request_info.request_method, "HEAD") != 0)
-		send_opened_file_stream(conn, fp, cl);
-	(void) fclose(fp);
-}
-
-/*
- * Parse HTTP headers from the given buffer, advance buffer to the point
- * where parsing stopped.
- */
-static void
-parse_http_headers(char **buf, struct mg_request_info *ri)
-{
-	int	i;
-
-	for (i = 0; i < (int) ARRAY_SIZE(ri->http_headers); i++) {
-		ri->http_headers[i].name = skip(buf, ": ");
-		ri->http_headers[i].value = skip(buf, "\r\n");
-		if (ri->http_headers[i].name[0] == '\0')
-			break;
-		ri->num_headers = i + 1;
-	}
-}
-
-static bool_t
-is_valid_http_method(const char *method)
-{
-	return (!strcmp(method, "GET") ||
-	    !strcmp(method, "POST") ||
-	    !strcmp(method, "HEAD") ||
-	    !strcmp(method, "PUT") ||
-	    !strcmp(method, "DELETE"));
-}
-
-/*
- * Parse HTTP request, fill in mg_request_info structure.
- */
-static bool_t
-parse_http_request(char *buf, struct mg_request_info *ri, const struct usa *usa)
-{
-	int	success_code = FALSE;
-
-	ri->request_method = skip(&buf, " ");
-	ri->uri = skip(&buf, " ");
-	ri->http_version = skip(&buf, "\r\n");
-
-	if (is_valid_http_method(ri->request_method) &&
-	    ri->uri[0] == '/' &&
-	    strncmp(ri->http_version, "HTTP/", 5) == 0) {
-		ri->http_version += 5;   /* Skip "HTTP/" */
-		parse_http_headers(&buf, ri);
-		ri->remote_port = ntohs(usa->u.sin.sin_port);
-		(void) memcpy(&ri->remote_ip, &usa->u.sin.sin_addr.s_addr, 4);
-		ri->remote_ip = ntohl(ri->remote_ip);
-		success_code = TRUE;
-	}
-
-	return (success_code);
-}
-
-/*
- * Keep reading the input (either opened file descriptor fd, or socket sock,
- * or SSL descriptor ssl) into buffer buf, until \r\n\r\n appears in the
- * buffer (which marks the end of HTTP request). Buffer buf may already
- * have some data. The length of the data is stored in nread.
- * Upon every read operation, increase nread by the number of bytes read.
- */
-static int
-read_request(FILE *fp, SOCKET sock, SSL *ssl, char *buf, int bufsiz, int *nread)
-{
-	int	n, request_len;
-
-	request_len = 0;
-	while (*nread < bufsiz && request_len == 0) {
-		n = pull(fp, sock, ssl, buf + *nread, bufsiz - *nread);
-		if (n <= 0) {
-			break;
-		} else {
-			*nread += n;
-			request_len = get_request_len(buf, (size_t) *nread);
-		}
-	}
-
-	return (request_len);
-}
-
-/*
- * For given directory path, substitute it to valid index file.
- * Return 0 if index file has been found, -1 if not found.
- * If the file is found, it's stats is returned in stp.
- */
-static bool_t
-substitute_index_file(struct mg_connection *conn,
-		char *path, size_t path_len, struct mgstat *stp)
-{
-	const char	*list;
-	struct mgstat	st;
-	struct vec	filename_vec;
-	size_t		n;
-	bool_t		found;
-
-	n = strlen(path);
-
-	/*
-	 * The 'path' given to us points to the directory. Remove all trailing
-	 * directory separator characters from the end of the path, and
-	 * then append single directory separator character.
-	 */
-	while (n > 0 && IS_DIRSEP_CHAR(path[n - 1]))
-		n--;
-	path[n] = DIRSEP;
-
-	/*
-	 * Traverse index files list. For each entry, append it to the given
-	 * path and see if the file exists. If it exists, break the loop
-	 */
-	lock_option(conn->ctx, OPT_INDEX_FILES);
-	list = conn->ctx->options[OPT_INDEX_FILES];
-	found = FALSE;
-
-	while ((list = next_option(list, &filename_vec, NULL)) != NULL) {
-
-		/* Ignore too long entries that may overflow path buffer */
-		if (filename_vec.len > path_len - n)
-			continue;
-
-		/* Prepare full path to the index file  */
-		(void) mg_strlcpy(path + n + 1,
-		    filename_vec.ptr, filename_vec.len + 1);
-
-		/* Does it exist ? */
-		if (mg_stat(path, &st) == 0) {
-			/* Yes it does, break the loop */
-			*stp = st;
-			found = TRUE;
-			break;
-		}
-	}
-	unlock_option(conn->ctx, OPT_INDEX_FILES);
-
-	/* If no index file exists, restore directory path */
-	if (found == FALSE)
-		path[n] = '\0';
-
-	return (found);
-}
-
-static void
-remove_callback(struct mg_context *ctx,
-		const char *uri_regex, int status_code, bool_t is_auth)
-{
-	struct callback	*cb;
-	int		i;
-
-	for (i = 0; i < ctx->num_callbacks; i++) {
-		cb = ctx->callbacks + i;
-		if ((uri_regex != NULL && cb->uri_regex != NULL &&
-		    ((is_auth && cb->is_auth) || (!is_auth && !cb->is_auth)) &&
-		    !strcmp(uri_regex, cb->uri_regex)) || (uri_regex == NULL &&
-		     (cb->status_code == 0 ||
-		      cb->status_code == status_code))) {
-			(void) memmove(cb, cb + 1,
-			    (char *) (ctx->callbacks + ctx->num_callbacks) -
-			    (char *) (cb + 1));
-			break;
-		}
-	}
-}
-
-static void
-add_callback(struct mg_context *ctx, const char *uri_regex, int status_code,
-		mg_callback_t func, bool_t is_auth, void *user_data)
-{
-	struct callback	*cb;
-
-	pthread_mutex_lock(&ctx->bind_mutex);
-	if (func == NULL) {
-		remove_callback(ctx, uri_regex, status_code, is_auth);
-	} else if (ctx->num_callbacks >= (int) ARRAY_SIZE(ctx->callbacks) - 1) {
-		cry(fc(ctx), "Too many callbacks! Increase MAX_CALLBACKS.");
-	} else {
-		cb = &ctx->callbacks[ctx->num_callbacks];
-		cb->uri_regex = uri_regex ? mg_strdup(uri_regex) : NULL;
-		cb->func = func;
-		cb->is_auth = is_auth;
-		cb->status_code = status_code;
-		cb->user_data = user_data;
-		ctx->num_callbacks++;
-		DEBUG_TRACE((DEBUG_MGS_PREFIX "%s: uri %s code %d",
-		    __func__, uri_regex ? uri_regex : "NULL", status_code));
-	}
-	pthread_mutex_unlock(&ctx->bind_mutex);
-}
-
-void
-mg_set_uri_callback(struct mg_context *ctx, const char *uri_regex,
-		mg_callback_t func, void *user_data)
-{
-	assert(uri_regex != NULL);
-	add_callback(ctx, uri_regex, -1, func, FALSE, user_data);
-}
-
-void
-mg_set_error_callback(struct mg_context *ctx, int error_code,
-		mg_callback_t func, void *user_data)
-{
-	assert(error_code >= 0 && error_code < 1000);
-	add_callback(ctx, NULL, error_code, func, FALSE, user_data);
-}
-
-void
-mg_set_auth_callback(struct mg_context *ctx, const char *uri_regex,
-		mg_callback_t func, void *user_data)
-{
-	assert(uri_regex != NULL);
-	add_callback(ctx, uri_regex, -1, func, TRUE, user_data);
-}
-
-/*
- * Return True if we should reply 304 Not Modified.
- */
-static bool_t
-is_not_modified(const struct mg_connection *conn, const struct mgstat *stp)
-{
-	const char *ims = mg_get_header(conn, "If-Modified-Since");
-	return (ims != NULL && stp->mtime < date_to_epoch(ims));
-}
-
-static bool_t
-append_chunk(struct mg_request_info *ri, FILE *fp, const char *buf, int len)
-{
-	bool_t	ret_code = TRUE;
-
-	if (fp == NULL) {
-		/* TODO: check for NULL here */
-		ri->post_data = (char *) realloc(ri->post_data,
-		    ri->post_data_len + len);
-		(void) memcpy(ri->post_data + ri->post_data_len, buf, len);
-		ri->post_data_len += len;
-	} else if (push(fp, INVALID_SOCKET,
-	    NULL, buf, (int64_t) len) != (int64_t) len) {
-		ret_code = FALSE;
-	}
-
-	return (ret_code);
-}
-
-static bool_t
-handle_request_body(struct mg_connection *conn, FILE *fp)
-{
-	struct mg_request_info	*ri = &conn->request_info;
-	const char	*expect, *tmp;
-	int64_t		content_len;
-	char		buf[BUFSIZ];
-	int		to_read, nread, already_read;
-	bool_t		success_code = FALSE;
-
-	content_len = get_content_length(conn);
-	expect = mg_get_header(conn, "Expect");
-
-	if (content_len == -1) {
-		send_error(conn, 411, "Length Required", "");
-	} else if (expect != NULL && mg_strcasecmp(expect, "100-continue")) {
-		send_error(conn, 417, "Expectation Failed", "");
-	} else {
-		if (expect != NULL)
-			(void) mg_printf(conn, "HTTP/1.1 100 Continue\r\n\r\n");
-
-		already_read = ri->post_data_len;
-		assert(already_read >= 0);
-
-		if (content_len <= (int64_t) already_read) {
-			ri->post_data_len = (int) content_len;
-			/*
-			 * If fp is NULL, this is embedded mode, and we do not
-			 * have to do anything: POST data is already there,
-			 * no need to allocate a buffer and copy it in.
-			 * If fp != NULL, we need to write the data.
-			 */
-			success_code = fp == NULL || (push(fp, INVALID_SOCKET,
-			    NULL, ri->post_data, content_len) == content_len) ?
-			    TRUE : FALSE;
-		} else {
-
-			if (fp == NULL) {
-				conn->free_post_data = TRUE;
-				tmp = ri->post_data;
-				/* +1 in case if already_read == 0 */
-				ri->post_data = (char*)malloc(already_read + 1);
-				(void) memcpy(ri->post_data, tmp, already_read);
-			} else {
-				(void) push(fp, INVALID_SOCKET, NULL,
-				    ri->post_data, (int64_t) already_read);
-			}
-
-			content_len -= already_read;
-
-			while (content_len > 0) {
-				to_read = sizeof(buf);
-				if ((int64_t) to_read > content_len)
-					to_read = (int) content_len;
-				nread = pull(NULL, conn->client.sock,
-				    conn->ssl, buf, to_read);
-				if (nread <= 0)
-					break;
-				if (!append_chunk(ri, fp, buf, nread))
-					break;
-				content_len -= nread;
-			}
-			success_code = content_len == 0 ? TRUE : FALSE;
-		}
-
-		/* Each error code path in this function must send an error */
-		if (success_code != TRUE)
-			send_error(conn, 577, http_500_error,
-			    "%s", "Error handling body data");
-	}
-
-	return (success_code);
-}
-
-#if !defined(NO_CGI)
-
-/*
- * This structure helps to create an environment for the spawned CGI program.
- * Environment is an array of "VARIABLE=VALUE\0" ASCIIZ strings,
- * last element must be NULL.
- * However, on Windows there is a requirement that all these VARIABLE=VALUE\0
- * strings must reside in a contiguous buffer. The end of the buffer is
- * marked by two '\0' characters.
- * We satisfy both worlds: we create an envp array (which is vars), all
- * entries are actually pointers inside buf.
- */
-struct cgi_env_block {
-	struct mg_connection *conn;
-	char	buf[CGI_ENVIRONMENT_SIZE];	/* Environment buffer	*/
-	int	len;				/* Space taken		*/
-	char	*vars[MAX_CGI_ENVIR_VARS];	/* char **envp		*/
-	int	nvars;				/* Number of variables	*/
-};
-
-/*
- * Append VARIABLE=VALUE\0 string to the buffer, and add a respective
- * pointer into the vars array.
- */
-static char *
-addenv(struct cgi_env_block *block, const char *fmt, ...)
-{
-	int	n, space;
-	char	*added;
-	va_list	ap;
-
-	/* Calculate how much space is left in the buffer */
-	space = sizeof(block->buf) - block->len - 2;
-	assert(space >= 0);
-
-	/* Make a pointer to the free space int the buffer */
-	added = block->buf + block->len;
-
-	/* Copy VARIABLE=VALUE\0 string into the free space */
-	va_start(ap, fmt);
-	n = mg_vsnprintf(block->conn, added, (size_t) space, fmt, ap);
-	va_end(ap);
-
-	/* Make sure we do not overflow buffer and the envp array */
-	if (n > 0 && n < space &&
-	    block->nvars < (int) ARRAY_SIZE(block->vars) - 2) {
-		/* Append a pointer to the added string into the envp array */
-		block->vars[block->nvars++] = block->buf + block->len;
-		/* Bump up used length counter. Include \0 terminator */
-		block->len += n + 1;
-	}
-
-	return (added);
-}
-
-static void
-prepare_cgi_environment(struct mg_connection *conn, const char *prog,
-		struct cgi_env_block *blk)
-{
-	const char	*s, *script_filename, *root, *slash;
-	struct vec	var_vec;
-	char		*p;
-	int		i;
-
-	blk->len = blk->nvars = 0;
-	blk->conn = conn;
-
-	/* SCRIPT_FILENAME */
-	script_filename = prog;
-	if ((s = strrchr(prog, '/')) != NULL)
-		script_filename = s + 1;
-
-	lock_option(conn->ctx, OPT_ROOT);
-	root = conn->ctx->options[OPT_ROOT];
-	addenv(blk, "SERVER_NAME=%s", conn->ctx->options[OPT_AUTH_DOMAIN]);
-	unlock_option(conn->ctx, OPT_ROOT);
-
-	/* Prepare the environment block */
-	addenv(blk, "%s", "GATEWAY_INTERFACE=CGI/1.1");
-	addenv(blk, "%s", "SERVER_PROTOCOL=HTTP/1.1");
-	addenv(blk, "%s", "REDIRECT_STATUS=200");	/* PHP */
-	addenv(blk, "SERVER_PORT=%d", ntohs(conn->client.lsa.u.sin.sin_port));
-	addenv(blk, "SERVER_ROOT=%s", root);
-	addenv(blk, "DOCUMENT_ROOT=%s", root);
-	addenv(blk, "REQUEST_METHOD=%s", conn->request_info.request_method);
-	addenv(blk, "REMOTE_ADDR=%s",
-	    inet_ntoa(conn->client.rsa.u.sin.sin_addr));
-	addenv(blk, "REMOTE_PORT=%d", conn->request_info.remote_port);
-	addenv(blk, "REQUEST_URI=%s", conn->request_info.uri);
-
-	slash = strrchr(conn->request_info.uri, '/');
-	addenv(blk, "SCRIPT_NAME=%.*s%s",
-	    (slash - conn->request_info.uri) + 1, conn->request_info.uri,
-	    script_filename);
-
-	addenv(blk, "SCRIPT_FILENAME=%s", script_filename);	/* PHP */
-	addenv(blk, "PATH_TRANSLATED=%s", prog);
-	addenv(blk, "HTTPS=%s", conn->ssl == NULL ? "off" : "on");
-
-	if ((s = mg_get_header(conn, "Content-Type")) != NULL)
-		addenv(blk, "CONTENT_TYPE=%s", s);
-
-	if (conn->request_info.query_string != NULL)
-		addenv(blk, "QUERY_STRING=%s", conn->request_info.query_string);
-
-	if ((s = mg_get_header(conn, "Content-Length")) != NULL)
-		addenv(blk, "CONTENT_LENGTH=%s", s);
-
-	if ((s = getenv("PATH")) != NULL)
-		addenv(blk, "PATH=%s", s);
-
-#if defined(_WIN32)
-	if ((s = getenv("COMSPEC")) != NULL)
-		addenv(blk, "COMSPEC=%s", s);
-	if ((s = getenv("SYSTEMROOT")) != NULL)
-		addenv(blk, "SYSTEMROOT=%s", s);
-#else
-	if ((s = getenv("LD_LIBRARY_PATH")) != NULL)
-		addenv(blk, "LD_LIBRARY_PATH=%s", s);
-#endif /* _WIN32 */
-
-	if ((s = getenv("PERLLIB")) != NULL)
-		addenv(blk, "PERLLIB=%s", s);
-
-	if (conn->request_info.remote_user != NULL) {
-		addenv(blk, "REMOTE_USER=%s", conn->request_info.remote_user);
-		addenv(blk, "%s", "AUTH_TYPE=Digest");
-	}
-
-	/* Add all headers as HTTP_* variables */
-	for (i = 0; i < conn->request_info.num_headers; i++) {
-		p = addenv(blk, "HTTP_%s=%s",
-		    conn->request_info.http_headers[i].name,
-		    conn->request_info.http_headers[i].value);
-
-		/* Convert variable name into uppercase, and change - to _ */
-		for (; *p != '=' && *p != '\0'; p++) {
-			if (*p == '-')
-				*p = '_';
-			*p = (char) toupper(* (unsigned char *) p);
-		}
-	}
-
-	/* Add user-specified variables */
-	lock_option(conn->ctx, OPT_CGI_ENV);
-	s = conn->ctx->options[OPT_CGI_ENV];
-	while ((s = next_option(s, &var_vec, NULL)) != NULL)
-		addenv(blk, "%.*s", var_vec.len, var_vec.ptr);
-	unlock_option(conn->ctx, OPT_CGI_ENV);
-
-	blk->vars[blk->nvars++] = NULL;
-	blk->buf[blk->len++] = '\0';
-
-	assert(blk->nvars < (int) ARRAY_SIZE(blk->vars));
-	assert(blk->len > 0);
-	assert(blk->len < (int) sizeof(blk->buf));
-}
-
-static void
-send_cgi(struct mg_connection *conn, const char *prog)
-{
-	int			headers_len, data_len, i;
-	const char		*status;
-	char			buf[MAX_REQUEST_SIZE], *pbuf;
-	struct mg_request_info	ri;
-	struct cgi_env_block	blk;
-	char			dir[FILENAME_MAX], *p;
-	int			fd_stdin[2], fd_stdout[2];
-	FILE			*in, *out;
-	pid_t			pid;
-
-	prepare_cgi_environment(conn, prog, &blk);
-
-	/* CGI must be executed in its own directory */
-	(void) mg_snprintf(conn, dir, sizeof(dir), "%s", prog);
-	if ((p = strrchr(dir, DIRSEP)) != NULL)
-		*p++ = '\0';
-
-	pid = (pid_t) -1;
-	fd_stdin[0] = fd_stdin[1] = fd_stdout[0] = fd_stdout[1] = -1;
-	in = out = NULL;
-
-	if (pipe(fd_stdin) != 0 || pipe(fd_stdout) != 0) {
-		send_error(conn, 500, http_500_error,
-		    "Cannot create CGI pipe: %s", strerror(ERRNO));
-		goto done;
-	} else if ((pid = spawn_process(conn, p, blk.buf, blk.vars,
-	    fd_stdin[0], fd_stdout[1], dir)) == (pid_t) -1) {
-		goto done;
-	} else if ((in = fdopen(fd_stdin[1], "wb")) == NULL ||
-	    (out = fdopen(fd_stdout[0], "rb")) == NULL) {
-		send_error(conn, 500, http_500_error,
-		    "fopen: %s", strerror(ERRNO));
-		goto done;
-	}
-
-	setbuf(in, NULL);
-	setbuf(out, NULL);
-
-	/*
-	 * spawn_process() must close those!
-	 * If we don't mark them as closed, close() attempt before
-	 * return from this function throws an exception on Windows.
-	 * Windows does not like when closed descriptor is closed again.
-	 */
-	fd_stdin[0] = fd_stdout[1] = -1;
-
-	/* Send POST data to the CGI process if needed */
-	if (!strcmp(conn->request_info.request_method, "POST") &&
-	    !handle_request_body(conn, in)) {
-		goto done;
-	}
-
-	/*
-	 * Now read CGI reply into a buffer. We need to set correct
-	 * status code, thus we need to see all HTTP headers first.
-	 * Do not send anything back to client, until we buffer in all
-	 * HTTP headers.
-	 */
-	data_len = 0;
-	headers_len = read_request(out, INVALID_SOCKET, NULL,
-	    buf, sizeof(buf), &data_len);
-	if (headers_len <= 0) {
-		send_error(conn, 500, http_500_error,
-		    "CGI program sent malformed HTTP headers: [%.*s]",
-		    data_len, buf);
-		goto done;
-	}
-	pbuf = buf;
-	buf[headers_len - 1] = '\0';
-	parse_http_headers(&pbuf, &ri);
-
-	/* Make up and send the status line */
-	status = get_header(&ri, "Status");
-	conn->request_info.status_code = status == NULL ? 200 : atoi(status);
-	(void) mg_printf(conn, "HTTP/1.1 %d OK\r\n",
-	    conn->request_info.status_code);
-
-	/* Send headers */
-	for (i = 0; i < ri.num_headers; i++)
-		(void) mg_printf(conn, "%s: %s\r\n",
-		    ri.http_headers[i].name,
-		    ri.http_headers[i].value);
-	(void) mg_write(conn, "\r\n", 2);
-
-	/* Send chunk of data that may be read after the headers */
-	conn->num_bytes_sent += mg_write(conn,
-	    buf + headers_len, data_len - headers_len);
-
-	/* Read the rest of CGI output and send to the client */
-	send_opened_file_stream(conn, out, INT64_MAX);
-
-done:
-	if (pid != (pid_t) -1)
-		kill(pid, SIGTERM);
-	if (fd_stdin[0] != -1)
-		(void) close(fd_stdin[0]);
-	if (fd_stdout[1] != -1)
-		(void) close(fd_stdout[1]);
-
-	if (in != NULL)
-		(void) fclose(in);
-	else if (fd_stdin[1] != -1)
-		(void) close(fd_stdin[1]);
-
-	if (out != NULL)
-		(void) fclose(out);
-	else if (fd_stdout[0] != -1)
-		(void) close(fd_stdout[0]);
-}
-#endif /* !NO_CGI */
-
-/*
- * For a given PUT path, create all intermediate subdirectories
- * for given path. Return 0 if the path itself is a directory,
- * or -1 on error, 1 if OK.
- */
-static int
-put_dir(const char *path)
-{
-	char		buf[FILENAME_MAX];
-	const char	*s, *p;
-	struct mgstat	st;
-	size_t		len;
-
-	for (s = p = path + 2; (p = strchr(s, '/')) != NULL; s = ++p) {
-		len = p - path;
-		assert(len < sizeof(buf));
-		(void) memcpy(buf, path, len);
-		buf[len] = '\0';
-
-		/* Try to create intermediate directory */
-		if (mg_stat(buf, &st) == -1 && mg_mkdir(buf, 0755) != 0)
-			return (-1);
-
-		/* Is path itself a directory ? */
-		if (p[1] == '\0')
-			return (0);
-	}
-
-	return (1);
-}
-
-static void
-put_file(struct mg_connection *conn, const char *path)
-{
-	struct mgstat	st;
-	FILE		*fp;
-	int		rc;
-
-	conn->request_info.status_code = mg_stat(path, &st) == 0 ? 200 : 201;
-
-	if (mg_get_header(conn, "Range")) {
-		send_error(conn, 501, "Not Implemented",
-		    "%s", "Range support for PUT requests is not implemented");
-	} else if ((rc = put_dir(path)) == 0) {
-		(void) mg_printf(conn, "HTTP/1.1 %d OK\r\n\r\n",
-		    conn->request_info.status_code);
-	} else if (rc == -1) {
-		send_error(conn, 500, http_500_error,
-		    "put_dir(%s): %s", path, strerror(ERRNO));
-	} else if ((fp = mg_fopen(path, "wb+")) == NULL) {
-		send_error(conn, 500, http_500_error,
-		    "fopen(%s): %s", path, strerror(ERRNO));
-	} else {
-		set_close_on_exec(fileno(fp));
-		if (handle_request_body(conn, fp))
-			(void) mg_printf(conn, "HTTP/1.1 %d OK\r\n\r\n",
-			    conn->request_info.status_code);
-		(void) fclose(fp);
-	}
-}
-
-#if !defined(NO_SSI)
-static void send_ssi_file(struct mg_connection *, const char *, FILE *, int);
-
-static void
-do_ssi_include(struct mg_connection *conn, const char *ssi, char *tag,
-		int include_level)
-{
-	char	file_name[BUFSIZ], path[FILENAME_MAX], *p;
-	FILE	*fp;
-
-	/*
-	 * sscanf() is safe here, since send_ssi_file() also uses buffer
-	 * of size BUFSIZ to get the tag. So strlen(tag) is always < BUFSIZ.
-	 */
-	if (sscanf(tag, " virtual=\"%[^\"]\"", file_name) == 1) {
-		/* File name is relative to the webserver root */
-		lock_option(conn->ctx, OPT_ROOT);
-		(void) mg_snprintf(conn, path, sizeof(path), "%s%c%s",
-		    conn->ctx->options[OPT_ROOT], DIRSEP, file_name);
-		unlock_option(conn->ctx, OPT_ROOT);
-	} else if (sscanf(tag, " file=\"%[^\"]\"", file_name) == 1) {
-		/*
-		 * File name is relative to the webserver working directory
-		 * or it is absolute system path
-		 */
-		(void) mg_snprintf(conn, path, sizeof(path), "%s", file_name);
-	} else if (sscanf(tag, " \"%[^\"]\"", file_name) == 1) {
-		/* File name is relative to the currect document */
-		(void) mg_snprintf(conn, path, sizeof(path), "%s", ssi);
-		if ((p = strrchr(path, DIRSEP)) != NULL)
-			p[1] = '\0';
-		(void) mg_snprintf(conn, path + strlen(path),
-		    sizeof(path) - strlen(path), "%s", file_name);
-	} else {
-		cry(conn, "Bad SSI #include: [%s]", tag);
-		return;
-	}
-
-	if ((fp = mg_fopen(path, "rb")) == NULL) {
-		cry(conn, "Cannot open SSI #include: [%s]: fopen(%s): %s",
-		    tag, path, strerror(ERRNO));
-	} else {
-		set_close_on_exec(fileno(fp));
-		if (match_extension(path,
-		    conn->ctx->options[OPT_SSI_EXTENSIONS])) {
-			send_ssi_file(conn, path, fp, include_level + 1);
-		} else {
-			send_opened_file_stream(conn, fp, INT64_MAX);
-		}
-		(void) fclose(fp);
-	}
-}
-
-static void
-do_ssi_exec(struct mg_connection *conn, char *tag)
-{
-	char	cmd[BUFSIZ];
-	FILE	*fp;
-
-	if (sscanf(tag, " \"%[^\"]\"", cmd) != 1) {
-		cry(conn, "Bad SSI #exec: [%s]", tag);
-	} else if ((fp = popen(cmd, "r")) == NULL) {
-		cry(conn, "Cannot SSI #exec: [%s]: %s", cmd, strerror(ERRNO));
-	} else {
-		send_opened_file_stream(conn, fp, INT64_MAX);
-		(void) pclose(fp);
-	}
-}
-
-static void
-send_ssi_file(struct mg_connection *conn, const char *path, FILE *fp,
-		int include_level)
-{
-	char	buf[BUFSIZ];
-	int	ch, len, in_ssi_tag;
-
-	if (include_level > 10) {
-		cry(conn, "SSI #include level is too deep (%s)", path);
-		return;
-	}
-
-	in_ssi_tag = FALSE;
-	len = 0;
-
-	while ((ch = fgetc(fp)) != EOF) {
-		if (in_ssi_tag && ch == '>') {
-			in_ssi_tag = FALSE;
-			buf[len++] = ch & 0xff;
-			buf[len] = '\0';
-			assert(len <= (int) sizeof(buf));
-			if (len < 6 || memcmp(buf, "