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-rw-r--r--main/common/dhcp_00.c337
1 files changed, 170 insertions, 167 deletions
diff --git a/main/common/dhcp_00.c b/main/common/dhcp_00.c
index 8a9d7ca..099a9d8 100644
--- a/main/common/dhcp_00.c
+++ b/main/common/dhcp_00.c
@@ -1,7 +1,7 @@
/**************************************************************************
*
* Copyright (c) 2013 Alcatel-Lucent
- *
+ *
* Alcatel Lucent licenses this file to You under the Apache License,
* Version 2.0 (the "License"); you may not use this file except in
* compliance with the License. A copy of the License is contained the
@@ -21,7 +21,7 @@
* dhcp_00.c:
*
* This file contains the functions that are called from dhcpboot.c if the
- * the default DHCP interaction is to be done by the monitor. Whenever a
+ * the default DHCP interaction is to be done by the monitor. Whenever a
* new dhcp_XX.c file is created, this file should be used as the template.
*
* Original author: Ed Sutter (ed.sutter@alcatel-lucent.com)
@@ -40,220 +40,223 @@
#if INCLUDE_DHCPBOOT
/* ValidDHCPOffer():
- * Target issued the DISCOVER, the incoming packet is the server's
- * OFFER reply. If the DHCPOFFRFLTR shell variable is not present, then
- * return 1 indicating acceptance of the offer. If the DHCPOFFRFLTR variable
- * exists, then use its content to determine if the offer should be accepted...
- *
- * Shell variable syntax:
- *
- * DHCP_FIELD_IDENTIFIER,EXPECTED_STRING
- *
- * where DHCP_FIELD_IDENTIFIER can be...
- * BFN bootfile name
- * SHN server-host name
- * VSO### vendor-specific option number (options encapsulated within
- * the Vendor-Specific Information (#43) option)
- * SSO### site-specific option number (range 128-254)
- *
- * For example:
- * 1...
- * if DHCPOFFRFLTR contains "BFN,abcfile"
- * then the offer will only be accepted if the bootfile specified by the
- * dhcp server contains the string "abcfile".
- * 2...
- * if DHCPOFFRFLTR contains "SHN,a_host_name"
- * then the offer will only be accepted if the server-hostname specified
- * by the dhcp server contains the string "a_host_name".
- * 3...
- * if DHCPOFFRFLTR contains "VSO18,some_String"
- * then the offer will only be accepted if the server returns vendor-
- * specific option # 18 and it contains the string "some_String".
+ * Target issued the DISCOVER, the incoming packet is the server's
+ * OFFER reply. If the DHCPOFFRFLTR shell variable is not present, then
+ * return 1 indicating acceptance of the offer. If the DHCPOFFRFLTR variable
+ * exists, then use its content to determine if the offer should be accepted...
+ *
+ * Shell variable syntax:
+ *
+ * DHCP_FIELD_IDENTIFIER,EXPECTED_STRING
+ *
+ * where DHCP_FIELD_IDENTIFIER can be...
+ * BFN bootfile name
+ * SHN server-host name
+ * VSO### vendor-specific option number (options encapsulated within
+ * the Vendor-Specific Information (#43) option)
+ * SSO### site-specific option number (range 128-254)
+ *
+ * For example:
+ * 1...
+ * if DHCPOFFRFLTR contains "BFN,abcfile"
+ * then the offer will only be accepted if the bootfile specified by the
+ * dhcp server contains the string "abcfile".
+ * 2...
+ * if DHCPOFFRFLTR contains "SHN,a_host_name"
+ * then the offer will only be accepted if the server-hostname specified
+ * by the dhcp server contains the string "a_host_name".
+ * 3...
+ * if DHCPOFFRFLTR contains "VSO18,some_String"
+ * then the offer will only be accepted if the server returns vendor-
+ * specific option # 18 and it contains the string "some_String".
*
- * Note that "containing the string" means that the string specified in
- * the DHCPOFFRFLTR shell variable can be the entire string or a sub-string
- * within the server's response.
+ * Note that "containing the string" means that the string specified in
+ * the DHCPOFFRFLTR shell variable can be the entire string or a sub-string
+ * within the server's response.
*/
int
-ValidDHCPOffer(struct dhcphdr *dhdr)
+ValidDHCPOffer(struct dhcphdr *dhdr)
{
- char *var;
- int offeraccepted, badsyntax;
+ char *var;
+ int offeraccepted, badsyntax;
- /* If no DHCPOFFRFLTR var, accept the offer... */
- var = getenv("DHCPOFFRFLTR");
- if (!var)
- return(1);
+ /* If no DHCPOFFRFLTR var, accept the offer... */
+ var = getenv("DHCPOFFRFLTR");
+ if(!var) {
+ return(1);
+ }
- /* Start off by assuming acceptance... */
- badsyntax = 0;
- offeraccepted = 1;
+ /* Start off by assuming acceptance... */
+ badsyntax = 0;
+ offeraccepted = 1;
- /* Now process the DHCPOFFRFLTR variable and incoming dhcp data,
- * and clear the offeraccepted (or set badsyntax) flag if necessary...
- */
+ /* Now process the DHCPOFFRFLTR variable and incoming dhcp data,
+ * and clear the offeraccepted (or set badsyntax) flag if necessary...
+ */
- if (!strncmp(var,"BFN,",4)) {
- if (!strstr((char *)dhdr->bootfile,var+4))
- offeraccepted = 0;
- }
- else if (!strncmp(var,"SHN,",4)) {
- if (!strstr((char *)dhdr->server_hostname,var+4))
- offeraccepted = 0;
- }
- else if ((!strncmp(var,"SSO",3)) || (!strncmp(var,"VSO",3))) {
- int optno;
- ulong cookie;
- char *comma, *optval, *vso;
+ if(!strncmp(var,"BFN,",4)) {
+ if(!strstr((char *)dhdr->bootfile,var+4)) {
+ offeraccepted = 0;
+ }
+ } else if(!strncmp(var,"SHN,",4)) {
+ if(!strstr((char *)dhdr->server_hostname,var+4)) {
+ offeraccepted = 0;
+ }
+ } else if((!strncmp(var,"SSO",3)) || (!strncmp(var,"VSO",3))) {
+ int optno;
+ ulong cookie;
+ char *comma, *optval, *vso;
- optno = atoi(var+3);
- comma = strchr(var,',');
- memcpy((char *)&cookie,(char *)&dhdr->magic_cookie,4);
- if (cookie != ecl(STANDARD_MAGIC_COOKIE))
- offeraccepted = 0;
- else if (!comma)
- badsyntax = 1;
- else if (var[0] == 'S') {
- if ((optno < 128) || (optno > 254))
- badsyntax = 1;
- else {
- optval = (char *)DhcpGetOption(optno,(unsigned char *)(dhdr+1));
- if (!optval)
- offeraccepted = 0;
- else {
- if (!strstr(optval+2,comma+1))
- offeraccepted = 0;
- }
- }
- }
- else if (var[0] == 'V') {
- if ((optno < 0) || (optno > 254))
- badsyntax = 1;
- else {
- vso = (char *)DhcpGetOption(DHCPOPT_VENDORSPECIFICINFO,
- (uchar *)dhdr+1);
- if (!vso)
- offeraccepted = 0;
- else {
- optval = (char *)DhcpGetOption(optno,(unsigned char *)vso+2);
- if (!optval)
- offeraccepted = 0;
- else {
- if (!strstr(optval+2,comma+1))
- offeraccepted = 0;
- }
- }
- }
- }
- }
- else {
- badsyntax = 1;
- }
- if (badsyntax) {
- printf("Bad DHCPOFFRFLTR syntax.\n");
- offeraccepted = 0;
- }
- return(offeraccepted);
+ optno = atoi(var+3);
+ comma = strchr(var,',');
+ memcpy((char *)&cookie,(char *)&dhdr->magic_cookie,4);
+ if(cookie != ecl(STANDARD_MAGIC_COOKIE)) {
+ offeraccepted = 0;
+ } else if(!comma) {
+ badsyntax = 1;
+ } else if(var[0] == 'S') {
+ if((optno < 128) || (optno > 254)) {
+ badsyntax = 1;
+ } else {
+ optval = (char *)DhcpGetOption(optno,(unsigned char *)(dhdr+1));
+ if(!optval) {
+ offeraccepted = 0;
+ } else {
+ if(!strstr(optval+2,comma+1)) {
+ offeraccepted = 0;
+ }
+ }
+ }
+ } else if(var[0] == 'V') {
+ if((optno < 0) || (optno > 254)) {
+ badsyntax = 1;
+ } else {
+ vso = (char *)DhcpGetOption(DHCPOPT_VENDORSPECIFICINFO,
+ (uchar *)dhdr+1);
+ if(!vso) {
+ offeraccepted = 0;
+ } else {
+ optval = (char *)DhcpGetOption(optno,(unsigned char *)vso+2);
+ if(!optval) {
+ offeraccepted = 0;
+ } else {
+ if(!strstr(optval+2,comma+1)) {
+ offeraccepted = 0;
+ }
+ }
+ }
+ }
+ }
+ } else {
+ badsyntax = 1;
+ }
+ if(badsyntax) {
+ printf("Bad DHCPOFFRFLTR syntax.\n");
+ offeraccepted = 0;
+ }
+ return(offeraccepted);
}
/* DhcpVendorSpecific():
- * Process any vendor specific data from the incoming header.
+ * Process any vendor specific data from the incoming header.
*/
void
DhcpVendorSpecific(struct dhcphdr *dhdr)
{
- return; /* Obviously, the default is no processing. */
+ return; /* Obviously, the default is no processing. */
}
/* printDhcpVSopt():
- * Input is the option, the option length and the pointer to the options.
- * Print the option.
+ * Input is the option, the option length and the pointer to the options.
+ * Print the option.
*/
int
printDhcpVSopt(int vsopt, int vsoptlen, char *options)
{
- return(0);
+ return(0);
}
/* buildDhcpHdr():
- * Called by dhcpboot.c to allow application-specific header stuff to
- * be added to header. Return 0 if generic stuff in dhcpboot.c is to be
- * used; else return 1 and the calling code will assume this function is
- * dealing with it (see dhcpboot.c for basic idea).
+ * Called by dhcpboot.c to allow application-specific header stuff to
+ * be added to header. Return 0 if generic stuff in dhcpboot.c is to be
+ * used; else return 1 and the calling code will assume this function is
+ * dealing with it (see dhcpboot.c for basic idea).
*/
int
buildDhcpHdr(struct dhcphdr *dhdr)
{
- return(0);
+ return(0);
}
/* DhcpBootpLoadVSA():
- * Called by DhcpBootpDone to store an ascii-coded-hex copy of the
- * vendor-specific-area (BOOTP) or options (DHCP) in the shell variable
- * DHCPVSA.
+ * Called by DhcpBootpDone to store an ascii-coded-hex copy of the
+ * vendor-specific-area (BOOTP) or options (DHCP) in the shell variable
+ * DHCPVSA.
*/
void
DhcpBootpLoadVSA(uchar *vsabin, int vsize)
{
- int i;
- uchar *cp, *vsaacx;
+ int i;
+ uchar *cp, *vsaacx;
- /* If after the transaction has completed, the RLYAGNT is */
- /* set, but GIPADD is not set, copy RLYAGNT to GIPADD... */
- if (!getenv("GIPADD") && getenv("RLYAGNT"))
- setenv("GIPADD",getenv("RLYAGNT"));
+ /* If after the transaction has completed, the RLYAGNT is */
+ /* set, but GIPADD is not set, copy RLYAGNT to GIPADD... */
+ if(!getenv("GIPADD") && getenv("RLYAGNT")) {
+ setenv("GIPADD",getenv("RLYAGNT"));
+ }
- /* Since the VSA (bootp) or options list (DHCP) can be large,
- * This code looks for the presence of the DHCPVSA shell variable
- * as an indication as to whether or not this data should be stored
- * in the DHCPVSA variable...
- * If the variable is present, then this code will load the DHCPVSA
- * shell variable; else it just returns here.
- * Note that it doesn't matter what the content of DHCPVSA is, as
- * long as it is present, so just loading it with "TRUE" in monrc
- * will be sufficient to tell this logic to load the variable with
- * the data.
- */
- if (!getenv("DHCPVSA"))
- return;
+ /* Since the VSA (bootp) or options list (DHCP) can be large,
+ * This code looks for the presence of the DHCPVSA shell variable
+ * as an indication as to whether or not this data should be stored
+ * in the DHCPVSA variable...
+ * If the variable is present, then this code will load the DHCPVSA
+ * shell variable; else it just returns here.
+ * Note that it doesn't matter what the content of DHCPVSA is, as
+ * long as it is present, so just loading it with "TRUE" in monrc
+ * will be sufficient to tell this logic to load the variable with
+ * the data.
+ */
+ if(!getenv("DHCPVSA")) {
+ return;
+ }
- /* If allocation succeeds, then copy BOOTP VendorSpecificArea to the */
- /* DHCPVSA shell variable. Copy it as ascii-coded hex */
- vsaacx = (uchar *)malloc((vsize*2)+4);
- if (vsaacx) {
- cp = vsaacx;
- for(i=0;i<vsize;i++,cp+=2)
- sprintf((char *)cp,"%02x", vsabin[i]);
- *cp = 0;
- setenv("DHCPVSA", (char *)vsaacx);
- free((char *)vsaacx);
- }
- else
- printf("DHCPVSA space allocation failed\n");
+ /* If allocation succeeds, then copy BOOTP VendorSpecificArea to the */
+ /* DHCPVSA shell variable. Copy it as ascii-coded hex */
+ vsaacx = (uchar *)malloc((vsize*2)+4);
+ if(vsaacx) {
+ cp = vsaacx;
+ for(i=0; i<vsize; i++,cp+=2) {
+ sprintf((char *)cp,"%02x", vsabin[i]);
+ }
+ *cp = 0;
+ setenv("DHCPVSA", (char *)vsaacx);
+ free((char *)vsaacx);
+ } else {
+ printf("DHCPVSA space allocation failed\n");
+ }
}
/* DhcpBootpDone():
- * Called at the end of the Bootp or Dhcp transaction.
- * Input...
- * bootp: 1 if BOOTP; else DHCP.
- * dhdr: pointer to dhcp or bootp header.
- * vsize: size of vendor specific area (for bootp this is fixed at 64,
- * but for dhcp it is variable).
+ * Called at the end of the Bootp or Dhcp transaction.
+ * Input...
+ * bootp: 1 if BOOTP; else DHCP.
+ * dhdr: pointer to dhcp or bootp header.
+ * vsize: size of vendor specific area (for bootp this is fixed at 64,
+ * but for dhcp it is variable).
*/
void
DhcpBootpDone(int bootp, struct dhcphdr *dhdr, int vsize)
{
- if (bootp) {
- struct bootphdr *bhdr;
+ if(bootp) {
+ struct bootphdr *bhdr;
- bhdr = (struct bootphdr *)dhdr;
- DhcpBootpLoadVSA(bhdr->vsa,vsize);
- }
- else {
- DhcpBootpLoadVSA((uchar *)&dhdr->magic_cookie,vsize);
- }
- return;
+ bhdr = (struct bootphdr *)dhdr;
+ DhcpBootpLoadVSA(bhdr->vsa,vsize);
+ } else {
+ DhcpBootpLoadVSA((uchar *)&dhdr->magic_cookie,vsize);
+ }
+ return;
}
#endif
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