user-manual: update for new default --track behavior

[git.git] / daemon.c

diff --git a/daemon.c b/daemon.c
index 66f8d6f03d91d7dfa4a164137ee0310ca26dc1aa..9cf22fef417cee29e550a35fef1bac1050482afa 100644 (file)
--- a/daemon.c
+++ b/daemon.c
@@ -16,7 +16,8 @@ static int reuseaddr;
 static const char daemon_usage[] =
 "git-daemon [--verbose] [--syslog] [--export-all]\n"
 "           [--timeout=n] [--init-timeout=n] [--strict-paths]\n"
-"           [--base-path=path] [--user-path | --user-path=path]\n"
+"           [--base-path=path] [--base-path-relaxed]\n"
+"           [--user-path | --user-path=path]\n"
 "           [--interpolated-path=path]\n"
 "           [--reuseaddr] [--detach] [--pid-file=file]\n"
 "           [--[enable|disable|allow-override|forbid-override]=service]\n"
@@ -34,6 +35,7 @@ static int export_all_trees;
 /* Take all paths relative to this one if non-NULL */
 static char *base_path;
 static char *interpolated_path;
+static int base_path_relaxed;
 
 /* Flag indicating client sent extra args. */
 static int saw_extended_args;
@@ -133,7 +135,7 @@ static int avoid_alias(char *p)
 {
        int sl, ndot;
 
-       /* 
+       /*
         * This resurrects the belts and suspenders paranoia check by HPA
         * done in <435560F7.4080006@zytor.com> thread, now enter_repo()
         * does not do getcwd() based path canonicalizations.
@@ -180,6 +182,7 @@ static char *path_ok(struct interp *itable)
 {
        static char rpath[PATH_MAX];
        static char interp_path[PATH_MAX];
+       int retried_path = 0;
        char *path;
        char *dir;
 
@@ -235,7 +238,22 @@ static char *path_ok(struct interp *itable)
                dir = rpath;
        }
 
-       path = enter_repo(dir, strict_paths);
+       do {
+               path = enter_repo(dir, strict_paths);
+               if (path)
+                       break;
+
+               /*
+                * if we fail and base_path_relaxed is enabled, try without
+                * prefixing the base path
+                */
+               if (base_path && base_path_relaxed && !retried_path) {
+                       dir = itable[INTERP_SLOT_DIR].value;
+                       retried_path = 1;
+                       continue;
+               }
+               break;
+       } while (1);
 
        if (!path) {
                logerror("'%s': unable to chdir or not a git archive", dir);
@@ -247,7 +265,7 @@ static char *path_ok(struct interp *itable)
                int pathlen = strlen(path);
 
                /* The validation is done on the paths after enter_repo
-                * appends optional {.git,.git/.git} and friends, but 
+                * appends optional {.git,.git/.git} and friends, but
                 * it does not use getcwd().  So if your /pub is
                 * a symlink to /mnt/pub, you can whitelist /pub and
                 * do not have to say /mnt/pub.
@@ -286,7 +304,7 @@ static int service_enabled;
 
 static int git_daemon_config(const char *var, const char *value)
 {
-       if (!strncmp(var, "daemon.", 7) &&
+       if (!prefixcmp(var, "daemon.") &&
            !strcmp(var + 7, service_looking_at->config_name)) {
                service_enabled = git_config_bool(var, value);
                return 0;
@@ -439,7 +457,7 @@ static void parse_extra_args(struct interp *table, char *extra_args, int buflen)
        }
 }
 
-void fill_in_extra_table_entries(struct interp *itable)
+static void fill_in_extra_table_entries(struct interp *itable)
 {
        char *hp;
 
@@ -562,7 +580,7 @@ static int execute(struct sockaddr *addr)
        for (i = 0; i < ARRAY_SIZE(daemon_service); i++) {
                struct daemon_service *s = &(daemon_service[i]);
                int namelen = strlen(s->name);
-               if (!strncmp("git-", line, 4) &&
+               if (!prefixcmp(line, "git-") &&
                    !strncmp(s->name, line + 4, namelen) &&
                    line[namelen + 4] == ' ') {
                        /*
@@ -970,8 +988,8 @@ static void store_pid(const char *path)
        FILE *f = fopen(path, "w");
        if (!f)
                die("cannot open pid file %s: %s", path, strerror(errno));
-       fprintf(f, "%d\n", getpid());
-       fclose(f);
+       if (fprintf(f, "%d\n", getpid()) < 0 || fclose(f) != 0)
+               die("failed to write pid file %s: %s", path, strerror(errno));
 }
 
 static int serve(char *listen_addr, int listen_port, struct passwd *pass, gid_t gid)
@@ -1011,7 +1029,7 @@ int main(int argc, char **argv)
        for (i = 1; i < argc; i++) {
                char *arg = argv[i];
 
-               if (!strncmp(arg, "--listen=", 9)) {
+               if (!prefixcmp(arg, "--listen=")) {
                    char *p = arg + 9;
                    char *ph = listen_addr = xmalloc(strlen(arg + 9) + 1);
                    while (*p)
@@ -1019,7 +1037,7 @@ int main(int argc, char **argv)
                    *ph = 0;
                    continue;
                }
-               if (!strncmp(arg, "--port=", 7)) {
+               if (!prefixcmp(arg, "--port=")) {
                        char *end;
                        unsigned long n;
                        n = strtoul(arg+7, &end, 0);
@@ -1045,11 +1063,11 @@ int main(int argc, char **argv)
                        export_all_trees = 1;
                        continue;
                }
-               if (!strncmp(arg, "--timeout=", 10)) {
+               if (!prefixcmp(arg, "--timeout=")) {
                        timeout = atoi(arg+10);
                        continue;
                }
-               if (!strncmp(arg, "--init-timeout=", 15)) {
+               if (!prefixcmp(arg, "--init-timeout=")) {
                        init_timeout = atoi(arg+15);
                        continue;
                }
@@ -1057,11 +1075,15 @@ int main(int argc, char **argv)
                        strict_paths = 1;
                        continue;
                }
-               if (!strncmp(arg, "--base-path=", 12)) {
+               if (!prefixcmp(arg, "--base-path=")) {
                        base_path = arg+12;
                        continue;
                }
-               if (!strncmp(arg, "--interpolated-path=", 20)) {
+               if (!strcmp(arg, "--base-path-relaxed")) {
+                       base_path_relaxed = 1;
+                       continue;
+               }
+               if (!prefixcmp(arg, "--interpolated-path=")) {
                        interpolated_path = arg+20;
                        continue;
                }
@@ -1073,11 +1095,11 @@ int main(int argc, char **argv)
                        user_path = "";
                        continue;
                }
-               if (!strncmp(arg, "--user-path=", 12)) {
+               if (!prefixcmp(arg, "--user-path=")) {
                        user_path = arg + 12;
                        continue;
                }
-               if (!strncmp(arg, "--pid-file=", 11)) {
+               if (!prefixcmp(arg, "--pid-file=")) {
                        pid_file = arg + 11;
                        continue;
                }
@@ -1086,27 +1108,27 @@ int main(int argc, char **argv)
                        log_syslog = 1;
                        continue;
                }
-               if (!strncmp(arg, "--user=", 7)) {
+               if (!prefixcmp(arg, "--user=")) {
                        user_name = arg + 7;
                        continue;
                }
-               if (!strncmp(arg, "--group=", 8)) {
+               if (!prefixcmp(arg, "--group=")) {
                        group_name = arg + 8;
                        continue;
                }
-               if (!strncmp(arg, "--enable=", 9)) {
+               if (!prefixcmp(arg, "--enable=")) {
                        enable_service(arg + 9, 1);
                        continue;
                }
-               if (!strncmp(arg, "--disable=", 10)) {
+               if (!prefixcmp(arg, "--disable=")) {
                        enable_service(arg + 10, 0);
                        continue;
                }
-               if (!strncmp(arg, "--allow-override=", 17)) {
+               if (!prefixcmp(arg, "--allow-override=")) {
                        make_service_overridable(arg + 17, 1);
                        continue;
                }
-               if (!strncmp(arg, "--forbid-override=", 18)) {
+               if (!prefixcmp(arg, "--forbid-override=")) {
                        make_service_overridable(arg + 18, 0);
                        continue;
                }