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authorJakub Hrozek <jhrozek@redhat.com>2009-07-26 14:51:55 +0200
committerStephen Gallagher <sgallagh@redhat.com>2009-08-05 10:19:20 -0400
commita5fe74914ab920bfaed87c046c525ee7148623f2 (patch)
tree2b5a01741c70db139d47071d1de5b1ccebca978a /server/util
parent29d442dad6dcb93ffc193de6f7cfd402129d4fb3 (diff)
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Move parsing of names and domains into util/
Diffstat (limited to 'server/util')
-rw-r--r--server/util/usertools.c118
-rw-r--r--server/util/util.h16
2 files changed, 134 insertions, 0 deletions
diff --git a/server/util/usertools.c b/server/util/usertools.c
index 07930613..220b52cb 100644
--- a/server/util/usertools.c
+++ b/server/util/usertools.c
@@ -20,8 +20,15 @@
*/
#include <pwd.h>
+#include <pcre.h>
+#include <errno.h>
#include <talloc.h>
+#include "confdb/confdb.h"
+#include "util/util.h"
+
+#define NAMES_CONFIG "config/names"
+
char *get_username_from_uid(TALLOC_CTX *mem_ctx, uid_t uid)
{
char *username;
@@ -33,3 +40,114 @@ char *get_username_from_uid(TALLOC_CTX *mem_ctx, uid_t uid)
username = talloc_strdup(mem_ctx, pwd->pw_name);
return username;
}
+
+int sss_names_init(TALLOC_CTX *mem_ctx, struct confdb_ctx *cdb, struct sss_names_ctx **out)
+{
+ struct sss_names_ctx *ctx = NULL;
+ const char *errstr;
+ int errval;
+ int errpos;
+ int ret;
+
+ ctx = talloc_zero(ctx, struct sss_names_ctx);
+ if (!ctx) return ENOMEM;
+
+ ret = confdb_get_string(cdb, ctx, NAMES_CONFIG,
+ "re-expression", NULL, &ctx->re_pattern);
+ if (ret != EOK) goto done;
+
+ if (!ctx->re_pattern) {
+ ctx->re_pattern = talloc_strdup(ctx,
+ "(?<name>[^@]+)@?(?<domain>[^@]*$)");
+ if (!ctx->re_pattern) {
+ ret = ENOMEM;
+ goto done;
+ }
+ }
+
+ ret = confdb_get_string(cdb, ctx, NAMES_CONFIG,
+ "full-name-format", NULL, &ctx->fq_fmt);
+ if (ret != EOK) goto done;
+
+ if (!ctx->fq_fmt) {
+ ctx->fq_fmt = talloc_strdup(ctx, "%1$s@%2$s");
+ if (!ctx->fq_fmt) {
+ ret = ENOMEM;
+ goto done;
+ }
+ }
+
+ ctx->re = pcre_compile2(ctx->re_pattern,
+ PCRE_DUPNAMES | PCRE_EXTENDED,
+ &errval, &errstr, &errpos, NULL);
+ if (!ctx->re) {
+ DEBUG(1, ("Invalid Regular Expression pattern at position %d."
+ " (Error: %d [%s])\n", errpos, errval, errstr));
+ ret = EFAULT;
+ goto done;
+ }
+
+ *out = ctx;
+ ret = EOK;
+
+done:
+ if (ret != EOK) {
+ talloc_free(ctx);
+ }
+ return ret;
+}
+
+int sss_parse_name(TALLOC_CTX *memctx,
+ struct sss_names_ctx *snctx,
+ const char *orig, char **domain, char **name)
+{
+ pcre *re = snctx->re;
+ const char *result;
+ int ovec[30];
+ int origlen;
+ int ret, strnum;
+
+ origlen = strlen(orig);
+
+ ret = pcre_exec(re, NULL, orig, origlen, 0, PCRE_NOTEMPTY, ovec, 30);
+ if (ret < 0) {
+ DEBUG(2, ("PCRE Matching error, %d\n", ret));
+ return EINVAL;
+ }
+
+ if (ret == 0) {
+ DEBUG(1, ("Too many matches, the pattern is invalid.\n"));
+ }
+
+ strnum = ret;
+
+ result = NULL;
+ ret = pcre_get_named_substring(re, orig, ovec, strnum, "name", &result);
+ if (ret < 0 || !result) {
+ DEBUG(2, ("Name not found!\n"));
+ return EINVAL;
+ }
+ *name = talloc_strdup(memctx, result);
+ pcre_free_substring(result);
+ if (!*name) return ENOMEM;
+
+
+ result = NULL;
+ ret = pcre_get_named_substring(re, orig, ovec, strnum, "domain", &result);
+ if (ret < 0 || !result) {
+ DEBUG(4, ("Domain not provided!\n"));
+ *domain = NULL;
+ } else {
+ /* ignore "" string */
+ if (*result) {
+ *domain = talloc_strdup(memctx, result);
+ pcre_free_substring(result);
+ if (!*domain) return ENOMEM;
+ } else {
+ pcre_free_substring(result);
+ *domain = NULL;
+ }
+ }
+
+ return EOK;
+}
diff --git a/server/util/util.h b/server/util/util.h
index 82c0be22..c4e3e49d 100644
--- a/server/util/util.h
+++ b/server/util/util.h
@@ -9,6 +9,7 @@
#include <errno.h>
#include <limits.h>
#include <time.h>
+#include <pcre.h>
#include "config.h"
#include "talloc.h"
#include "tevent.h"
@@ -144,4 +145,19 @@ int password_destructor(void *memctx);
/* from usertools.c */
char *get_username_from_uid(TALLOC_CTX *mem_ctx, uid_t uid);
+struct sss_names_ctx {
+ char *re_pattern;
+ char *fq_fmt;
+
+ pcre *re;
+};
+
+int sss_names_init(TALLOC_CTX *mem_ctx,
+ struct confdb_ctx *cdb,
+ struct sss_names_ctx **out);
+
+int sss_parse_name(TALLOC_CTX *memctx,
+ struct sss_names_ctx *snctx,
+ const char *orig, char **domain, char **name);
+
#endif /* __SSSD_UTIL_H__ */