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Clean up and ensure proper usage of alloca()

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This replaces all calls to alloca() with ast_alloca() which calls gcc's
__builtin_alloca() to avoid BSD semantics and removes all NULL checks
on memory allocated via ast_alloca() and ast_strdupa().

(closes issue ASTERISK-20125)
Review: https://reviewboard.asterisk.org/r/2032/
Patch-by: Walter Doekes (wdoekes)
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Merged revisions 370642 from http://svn.asterisk.org/svn/asterisk/branches/1.8
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Merged revisions 370643 from http://svn.asterisk.org/svn/asterisk/branches/10


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@370655 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Kinsey Moore
2012-07-31 20:21:43 +00:00
parent 6c23a60f80
commit 9b16c8b0f6
64 changed files with 317 additions and 399 deletions
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4
funcs/func_global.c
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@@ -148,7 +148,7 @@ static int shared_read(struct ast_channel *chan, const char *cmd, char *data, ch
AST_STANDARD_APP_ARGS(args, data);
if (!ast_strlen_zero(args.chan)) {
char *prefix = alloca(strlen(args.chan) + 2);
char *prefix = ast_alloca(strlen(args.chan) + 2);
sprintf(prefix, "%s-", args.chan);
if (!(c_ref = ast_channel_get_by_name(args.chan)) && !(c_ref = ast_channel_get_by_name_prefix(prefix, strlen(prefix)))) {
ast_log(LOG_ERROR, "Channel '%s' not found! Variable '%s' will be blank.\n", args.chan, args.var);
@@ -206,7 +206,7 @@ static int shared_write(struct ast_channel *chan, const char *cmd, char *data, c
AST_STANDARD_APP_ARGS(args, data);
if (!ast_strlen_zero(args.chan)) {
char *prefix = alloca(strlen(args.chan) + 2);
char *prefix = ast_alloca(strlen(args.chan) + 2);
sprintf(prefix, "%s-", args.chan);
if (!(c_ref = ast_channel_get_by_name(args.chan)) && !(c_ref = ast_channel_get_by_name_prefix(prefix, strlen(prefix)))) {
ast_log(LOG_ERROR, "Channel '%s' not found! Variable '%s' not set to '%s'.\n", args.chan, args.var, value);