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add more paranoid handling to pbx_builtin_serialize_variables

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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@4107 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Anthony Minessale II
2004-10-27 01:34:06 +00:00
parent 8a13712e45
commit 5e5c478934
1 changed files with 8 additions and 5 deletions
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13
pbx.c
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@@ -4921,18 +4921,21 @@ int pbx_builtin_serialize_variables(struct ast_channel *chan, char *buf, size_t
{ {
struct ast_var_t *variables; struct ast_var_t *variables;
struct varshead *headp; struct varshead *headp;
char *var=NULL ,*val=NULL;
int total = 0; int total = 0;
memset(buf,0,size); memset(buf,0,size);
if (chan) { if (chan) {
headp=&chan->varshead; headp=&chan->varshead;
AST_LIST_TRAVERSE(headp,variables,entries) { AST_LIST_TRAVERSE(headp,variables,entries) {
snprintf(buf + strlen(buf), size - strlen(buf), "%s=%s\n", ast_var_name(variables), ast_var_value(variables)); if(chan && variables && (var=ast_var_name(variables)) && (val=ast_var_value(variables))) {
if(strlen(buf) >= size) { snprintf(buf + strlen(buf), size - strlen(buf), "%s=%s\n", var, val);
ast_log(LOG_ERROR,"Data Buffer Size Exceeded!\n"); if(strlen(buf) >= size) {
break; ast_log(LOG_ERROR,"Data Buffer Size Exceeded!\n");
break;
}
total++;
} }
total++;
} }
} }