[Asterisk-code-review] main/utils: allow checking for command in $PATH (asterisk[master])

[Philip Prindeville]

Philip Prindeville has uploaded this change for review. ( https://gerrit.asterisk.org/c/asterisk/+/18839 )


Change subject: main/utils: allow checking for command in $PATH
......................................................................

main/utils: allow checking for command in $PATH

ASTERISK-30037

Change-Id: I4b6f7264c8c737c476c798d2352f3232b263bbdf
---
M include/asterisk/utils.h
M main/utils.c
2 files changed, 39 insertions(+), 0 deletions(-)



  git pull ssh://gerrit.asterisk.org:29418/asterisk refs/changes/39/18839/1

diff --git a/include/asterisk/utils.h b/include/asterisk/utils.h
index 72deaa3..3c06e83 100644
--- a/include/asterisk/utils.h
+++ b/include/asterisk/utils.h
@@ -1105,4 +1105,14 @@
  */
 int ast_thread_is_user_interface(void);
 
+/*!
+ * \brief Test for the presence of an executable command in $PATH
+ *
+ * \param cmd Name of command to locate.
+ *
+ * \retval True (non-zero) if command is in $PATH.
+ * \retval False (zero) command not found.
+ */
+int ast_check_command_in_path(const char *cmd);
+
 #endif /* _ASTERISK_UTILS_H */
diff --git a/main/utils.c b/main/utils.c
index 7d1d6bd..9beee92 100644
--- a/main/utils.c
+++ b/main/utils.c
@@ -3216,3 +3216,32 @@
 
 	return *thread_user_interface;
 }
+
+int ast_check_command_in_path(const char *cmd)
+{
+       char *token, *saveptr, *path = getenv("PATH");
+       char filename[PATH_MAX];
+
+       if (path == NULL) {
+	       return 0;
+       }
+
+       path = ast_strdup(path);
+       if (path == NULL) {
+	       return 0;
+       }
+
+       token = strtok_r(path, ":", &saveptr);
+       while (token != NULL) {
+	       snprintf(filename, sizeof(filename), "%s/%s", token, cmd);
+	       if (access(filename, X_OK) == 0) {
+		       ast_free(path);
+		       return 1;
+	       }
+
+	       token = strtok_r(NULL, ":", &saveptr);
+       }
+       ast_free(path);
+       return 0;
+}
+

-- 
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Gerrit-Project: asterisk
Gerrit-Branch: master
Gerrit-Change-Id: I4b6f7264c8c737c476c798d2352f3232b263bbdf
Gerrit-Change-Number: 18839
Gerrit-PatchSet: 1
Gerrit-Owner: Philip Prindeville <philipp at redfish-solutions.com>
Gerrit-MessageType: newchange
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