Merged revisions 127560 via svnmerge from

https://origsvn.digium.com/svn/asterisk/branches/1.4

........
r127560 | mmichelson | 2008-07-02 15:47:38 -0500 (Wed, 02 Jul 2008) | 3 lines

Fix thread-safety of some of the pbx_builtin_getvar_helper calls

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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@127562 65c4cc65-6c06-0410-ace0-fbb531ad65f3

diff --git a/channels/chan_agent.c b/channels/chan_agent.c
index 7ad929ca1b6b1f2f696e1ec7bd2522540b0778b1..277ebda09faafdea1ab79635c464969454af15be 100644 (file)
--- a/channels/chan_agent.c
+++ b/channels/chan_agent.c
@@ -1859,6 +1859,7 @@ static int login_exec(struct ast_channel *chan, void *data)
 
        ast_copy_string(agent_goodbye, agentgoodbye, sizeof(agent_goodbye));
 
+       ast_channel_lock(chan);
        /* Set Channel Specific Login Overrides */
        if (!ast_strlen_zero(pbx_builtin_getvar_helper(chan, "AGENTLMAXLOGINTRIES"))) {
                max_login_tries = atoi(pbx_builtin_getvar_helper(chan, "AGENTMAXLOGINTRIES"));
@@ -1880,6 +1881,7 @@ static int login_exec(struct ast_channel *chan, void *data)
                tmpoptions=pbx_builtin_getvar_helper(chan, "AGENTGOODBYE");
                ast_verb(3, "Saw variable AGENTGOODBYE=%s, setting agent_goodbye to: %s on Channel '%s'.\n",tmpoptions,agent_goodbye,chan->name);
        }
+       ast_channel_unlock(chan);
        /* End Channel Specific Login Overrides */
        
        if (!ast_strlen_zero(args.options)) {
@@ -1920,6 +1922,8 @@ static int login_exec(struct ast_channel *chan, void *data)
                /* Check again for accuracy */
                AST_LIST_LOCK(&agents);
                AST_LIST_TRAVERSE(&agents, p, list) {
+                       int unlock_channel = 1;
+                       ast_channel_lock(chan);
                        ast_mutex_lock(&p->lock);
                        if (!strcmp(p->agent, user) &&
                            !strcmp(p->password, pass) && !p->pending) {
@@ -1964,6 +1968,8 @@ static int login_exec(struct ast_channel *chan, void *data)
                                        p->enddtmf = *tmpoptions;
                                        ast_verb(3, "Saw variable AGENTENDDTMF=%s, setting enddtmf to: %c for Agent '%s'.\n", tmpoptions, p->enddtmf, p->agent);
                                }
+                               ast_channel_unlock(chan);
+                               unlock_channel = 0;
                                /* End Channel Specific Agent Overrides */
                                if (!p->chan) {
                                        long logintime;
@@ -2106,6 +2112,9 @@ static int login_exec(struct ast_channel *chan, void *data)
                                break;
                        }
                        ast_mutex_unlock(&p->lock);
+                       if (unlock_channel) {
+                               ast_channel_unlock(chan);
+                       }
                }
                if (!p)
                        AST_LIST_UNLOCK(&agents);