cleanups: Fix potential bugs in connect.c

The strncmp for ACK was ACK does not include the final space.
Presumably either we should either remove the trailing space,
or compare 4 chars (as this patch does).

'path' is sometimes strdup'ed, but never freed.

Signed-off-by: Serge E. Hallyn <serue@us.ibm.com>
Signed-off-by: Junio C Hamano <junkio@cox.net>

diff --git a/connect.c b/connect.c
index 3f2d65c..6a8f8a6 100644 (file)
--- a/connect.c
+++ b/connect.c
@@ -74,7 +74,7 @@ int get_ack(int fd, unsigned char *result_sha1)
                line[--len] = 0;
        if (!strcmp(line, "NAK"))
                return 0;
-       if (!strncmp(line, "ACK ", 3)) {
+       if (!strncmp(line, "ACK ", 4)) {
                if (!get_sha1_hex(line+4, result_sha1)) {
                        if (strstr(line+45, "continue"))
                                return 2;
@@ -567,6 +567,7 @@ int git_connect(int fd[2], char *url, const char *prog)
        int pipefd[2][2];
        pid_t pid;
        enum protocol protocol = PROTO_LOCAL;
+       int free_path = 0;
 
        host = strstr(url, "://");
        if(host) {
@@ -610,16 +611,23 @@ int git_connect(int fd[2], char *url, const char *prog)
                char *ptr = path;
                if (path[1] == '~')
                        path++;
-               else
+               else {
                        path = strdup(ptr);
+                       free_path = 1;
+               }
 
                *ptr = '\0';
        }
 
        if (protocol == PROTO_GIT) {
+               int ret;
                if (git_use_proxy(host))
-                       return git_proxy_connect(fd, prog, host, path);
-               return git_tcp_connect(fd, prog, host, path);
+                       ret = git_proxy_connect(fd, prog, host, path);
+               else
+                       ret = git_tcp_connect(fd, prog, host, path);
+               if (free_path)
+                       free(path);
+               return ret;
        }
 
        if (pipe(pipefd[0]) < 0 || pipe(pipefd[1]) < 0)
@@ -659,6 +667,8 @@ int git_connect(int fd[2], char *url, const char *prog)
        fd[1] = pipefd[1][1];
        close(pipefd[0][1]);
        close(pipefd[1][0]);
+       if (free_path)
+               free(path);
        return pid;
 }