chiark / gitweb /
Use _cleanup_ when reading config files
[elogind.git] / src / shared / conf-parser.c
index f3e258a65cd2a819d864de8de50654e6c31b1d3e..fbacf986a515b3e30ceeb0a1c5fe1c958733d283 100644 (file)
@@ -262,23 +262,19 @@ int config_parse(
                 void *userdata) {
 
         unsigned line = 0;
-        char *section = NULL;
+        char _cleanup_free_ *section = NULL, *continuation = NULL;
+        FILE _cleanup_fclose_ *ours = NULL;
         int r;
-        bool ours = false;
-        char *continuation = NULL;
 
         assert(filename);
         assert(lookup);
 
         if (!f) {
-                f = fopen(filename, "re");
+                f = ours = fopen(filename, "re");
                 if (!f) {
-                        r = -errno;
-                        log_error("Failed to open configuration file '%s': %s", filename, strerror(-r));
-                        goto finish;
+                        log_error("Failed to open configuration file '%s': %m", filename);
+                        return -errno;
                 }
-
-                ours = true;
         }
 
         while (!feof(f)) {
@@ -289,19 +285,16 @@ int config_parse(
                         if (feof(f))
                                 break;
 
-                        r = -errno;
-                        log_error("Failed to read configuration file '%s': %s", filename, strerror(-r));
-                        goto finish;
+                        log_error("Failed to read configuration file '%s': %m", filename);
+                        return -errno;
                 }
 
                 truncate_nl(l);
 
                 if (continuation) {
                         c = strappend(continuation, l);
-                        if (!c) {
-                                r = -ENOMEM;
-                                goto finish;
-                        }
+                        if (!c)
+                                return -ENOMEM;
 
                         free(continuation);
                         continuation = NULL;
@@ -323,10 +316,8 @@ int config_parse(
                                 continuation = c;
                         else {
                                 continuation = strdup(l);
-                                if (!continuation) {
-                                        r = -ENOMEM;
-                                        goto finish;
-                                }
+                                if (!continuation)
+                                        return -ENOMEM;
                         }
 
                         continue;
@@ -344,19 +335,10 @@ int config_parse(
                 free(c);
 
                 if (r < 0)
-                        goto finish;
+                        return r;
         }
 
-        r = 0;
-
-finish:
-        free(section);
-        free(continuation);
-
-        if (f && ours)
-                fclose(f);
-
-        return r;
+        return 0;
 }
 
 int config_parse_int(
@@ -377,7 +359,8 @@ int config_parse_int(
         assert(rvalue);
         assert(data);
 
-        if ((r = safe_atoi(rvalue, i)) < 0) {
+        r = safe_atoi(rvalue, i);
+        if (r < 0) {
                 log_error("[%s:%u] Failed to parse numeric value, ingoring: %s", filename, line, rvalue);
                 return 0;
         }
@@ -403,7 +386,8 @@ int config_parse_long(
         assert(rvalue);
         assert(data);
 
-        if ((r = safe_atoli(rvalue, i)) < 0) {
+        r = safe_atoli(rvalue, i);
+        if (r < 0) {
                 log_error("[%s:%u] Failed to parse numeric value, ignoring: %s", filename, line, rvalue);
                 return 0;
         }
@@ -429,7 +413,8 @@ int config_parse_uint64(
         assert(rvalue);
         assert(data);
 
-        if ((r = safe_atou64(rvalue, u)) < 0) {
+        r = safe_atou64(rvalue, u);
+        if (r < 0) {
                 log_error("[%s:%u] Failed to parse numeric value, ignoring: %s", filename, line, rvalue);
                 return 0;
         }
@@ -455,7 +440,35 @@ int config_parse_unsigned(
         assert(rvalue);
         assert(data);
 
-        if ((r = safe_atou(rvalue, u)) < 0) {
+        r = safe_atou(rvalue, u);
+        if (r < 0) {
+                log_error("[%s:%u] Failed to parse numeric value: %s", filename, line, rvalue);
+                return r;
+        }
+
+        return 0;
+}
+
+int config_parse_double(
+                const char *filename,
+                unsigned line,
+                const char *section,
+                const char *lvalue,
+                int ltype,
+                const char *rvalue,
+                void *data,
+                void *userdata) {
+
+        double *d = data;
+        int r;
+
+        assert(filename);
+        assert(lvalue);
+        assert(rvalue);
+        assert(data);
+
+        r = safe_atod(rvalue, d);
+        if (r < 0) {
                 log_error("[%s:%u] Failed to parse numeric value: %s", filename, line, rvalue);
                 return r;
         }
@@ -593,9 +606,9 @@ int config_parse_string(
         assert(rvalue);
         assert(data);
 
-        n = cunescape(rvalue);
+        n = strdup(rvalue);
         if (!n)
-                return -ENOMEM;
+                return log_oom();
 
         if (!utf8_is_valid(n)) {
                 log_error("[%s:%u] String is not UTF-8 clean, ignoring assignment: %s", filename, line, rvalue);
@@ -644,7 +657,7 @@ int config_parse_path(
 
         n = strdup(rvalue);
         if (!n)
-                return -ENOMEM;
+                return log_oom();
 
         path_kill_slashes(n);
 
@@ -664,12 +677,8 @@ int config_parse_strv(
                 void *data,
                 void *userdata) {
 
-        char*** sv = data;
-        char **n;
-        char *w;
-        unsigned k;
+        char *** sv = data, *w, *state;
         size_t l;
-        char *state;
         int r;
 
         assert(filename);
@@ -677,48 +686,40 @@ int config_parse_strv(
         assert(rvalue);
         assert(data);
 
-        k = strv_length(*sv);
-        FOREACH_WORD_QUOTED(w, l, rvalue, state)
-                k++;
+        if (isempty(rvalue)) {
+                char **empty;
 
-        n = new(char*, k+1);
-        if (!n)
-                return -ENOMEM;
+                /* Empty assignment resets the list. As a special rule
+                 * we actually fill in a real empty array here rather
+                 * than NULL, since some code wants to know if
+                 * something was set at all... */
+                empty = strv_new(NULL, NULL);
+                if (!empty)
+                        return log_oom();
 
-        if (*sv)
-                for (k = 0; (*sv)[k]; k++)
-                        n[k] = (*sv)[k];
-        else
-                k = 0;
+                strv_free(*sv);
+                *sv = empty;
+                return 0;
+        }
 
         FOREACH_WORD_QUOTED(w, l, rvalue, state) {
-                n[k] = cunescape_length(w, l);
-                if (!n[k]) {
-                        r = -ENOMEM;
-                        goto fail;
-                }
+                _cleanup_free_ char *n;
 
-                if (!utf8_is_valid(n[k])) {
-                        log_error("[%s:%u] String is not UTF-8 clean, ignoring assignment: %s", filename, line, rvalue);
-                        free(n[k]);
+                n = cunescape_length(w, l);
+                if (!n)
+                        return log_oom();
+
+                if (!utf8_is_valid(n)) {
+                        log_error("[%s:%u] String is not UTF-8 clean, ignoring: %s", filename, line, rvalue);
                         continue;
                 }
 
-                k++;
+                r = strv_extend(sv, n);
+                if (r < 0)
+                        return log_oom();
         }
 
-        n[k] = NULL;
-        free(*sv);
-        *sv = n;
-
         return 0;
-
-fail:
-        for (; k > 0; k--)
-                free(n[k-1]);
-        free(n);
-
-        return r;
 }
 
 int config_parse_path_strv(
@@ -731,12 +732,8 @@ int config_parse_path_strv(
                 void *data,
                 void *userdata) {
 
-        char*** sv = data;
-        char **n;
-        char *w;
-        unsigned k;
+        char*** sv = data, *w, *state;
         size_t l;
-        char *state;
         int r;
 
         assert(filename);
@@ -744,57 +741,40 @@ int config_parse_path_strv(
         assert(rvalue);
         assert(data);
 
-        k = strv_length(*sv);
-        FOREACH_WORD_QUOTED(w, l, rvalue, state)
-                k++;
-
-        n = new(char*, k+1);
-        if (!n)
-                return -ENOMEM;
-
-        k = 0;
-        if (*sv)
-                for (; (*sv)[k]; k++)
-                        n[k] = (*sv)[k];
+        if (isempty(rvalue)) {
+                /* Empty assignment resets the list */
+                strv_free(*sv);
+                *sv = NULL;
+                return 0;
+        }
 
         FOREACH_WORD_QUOTED(w, l, rvalue, state) {
-                n[k] = strndup(w, l);
-                if (!n[k]) {
-                        r = -ENOMEM;
-                        goto fail;
-                }
+                _cleanup_free_ char *n;
+
+                n = strndup(w, l);
+                if (!n)
+                        return log_oom();
 
-                if (!utf8_is_valid(n[k])) {
+                if (!utf8_is_valid(n)) {
                         log_error("[%s:%u] Path is not UTF-8 clean, ignoring assignment: %s", filename, line, rvalue);
-                        free(n[k]);
                         continue;
                 }
 
-                if (!path_is_absolute(n[k])) {
+                if (!path_is_absolute(n)) {
                         log_error("[%s:%u] Not an absolute path, ignoring: %s", filename, line, rvalue);
-                        free(n[k]);
                         continue;
                 }
 
-                path_kill_slashes(n[k]);
-                k++;
+                path_kill_slashes(n);
+                r = strv_extend(sv, n);
+                if (r < 0)
+                        return log_oom();
         }
 
-        n[k] = NULL;
-        free(*sv);
-        *sv = n;
-
         return 0;
-
-fail:
-        for (; k > 0; k--)
-                free(n[k-1]);
-        free(n);
-
-        return r;
 }
 
-int config_parse_usec(
+int config_parse_sec(
                 const char *filename,
                 unsigned line,
                 const char *section,
@@ -811,7 +791,7 @@ int config_parse_usec(
         assert(rvalue);
         assert(data);
 
-        if (parse_usec(rvalue, usec) < 0) {
+        if (parse_sec(rvalue, usec) < 0) {
                 log_error("[%s:%u] Failed to parse time value, ignoring: %s", filename, line, rvalue);
                 return 0;
         }
@@ -865,7 +845,7 @@ int config_parse_mode(
 
         errno = 0;
         l = strtol(rvalue, &x, 8);
-        if (!x || *x || errno) {
+        if (!x || x == rvalue || *x || errno) {
                 log_error("[%s:%u] Failed to parse mode value, ignoring: %s", filename, line, rvalue);
                 return 0;
         }
@@ -957,6 +937,16 @@ int config_parse_set_status(
         assert(rvalue);
         assert(data);
 
+        if (isempty(rvalue)) {
+                /* Empty assignment resets the list */
+
+                set_free(status_set->signal);
+                set_free(status_set->code);
+
+                status_set->signal = status_set->code = NULL;
+                return 0;
+        }
+
         FOREACH_WORD(w, l, rvalue, state) {
                 int val;
                 char *temp;
@@ -981,8 +971,8 @@ int config_parse_set_status(
                                         return r;
                                 }
                         } else {
-                                log_error("[%s:%u] Failed to parse value: %s", filename, line, w);
-                                return r;
+                                log_error("[%s:%u] Failed to parse value, ignoring: %s", filename, line, w);
+                                return 0;
                         }
                 } else {
                         free(temp);
@@ -1001,7 +991,7 @@ int config_parse_set_status(
                                 }
                         }
                 }
-
         }
+
         return 0;
 }