DB: Switch to new libini_config API

https://fedorahosted.org/sssd/ticket/1786

Since we need to support the old interface as well, the configure scritp
is modified and correct ini interface is chosen.

2 files changed, 569 insertions, 0 deletions

diff --git a/src/util/sss_ini.c b/src/util/sss_ini.c
new file mode 100644
index 000000000..32e06781c
--- /dev/null
+++ b/src/util/sss_ini.c
@@ -0,0 +1,488 @@
+/*
+    SSSD
+
+    sss_ini.c
+
+    Authors:
+        Ondrej Kos <okos@redhat.com>
+
+    Copyright (C) 2013 Red Hat
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include <stdio.h>
+#include <errno.h>
+#include <talloc.h>
+
+#include "config.h"
+#include "util/util.h"
+#include "util/sss_ini.h"
+#include "confdb/confdb_setup.h"
+#include "confdb/confdb_private.h"
+
+#ifdef HAVE_LIBINI_CONFIG_V1
+#include "ini_configobj.h"
+#elif HAVE_LIBINI_CONFIG_V0
+#include "collection.h"
+#include "collection_tools.h"
+#else
+#error "Unsupported libini version"
+#endif
+
+#include "ini_config.h"
+
+
+#ifdef HAVE_LIBINI_CONFIG_V1
+
+struct sss_ini_initdata {
+    char **error_list;
+    struct ini_cfgobj *sssd_config;
+    struct value_obj *obj;
+    const struct stat *cstat;
+    struct ini_cfgfile *file;
+};
+
+#define sss_ini_get_sec_list                   ini_get_section_list
+#define sss_ini_get_attr_list                  ini_get_attribute_list
+#define sss_ini_get_const_string_config_value  ini_get_const_string_config_value
+#define sss_ini_get_config_obj                 ini_get_config_valueobj
+
+
+
+#elif HAVE_LIBINI_CONFIG_V0
+
+struct sss_ini_initdata {
+    struct collection_item *error_list;
+    struct collection_item *sssd_config;
+    struct collection_item *obj;
+    struct stat cstat;
+    int file;
+};
+
+#define sss_ini_get_sec_list                   get_section_list
+#define sss_ini_get_attr_list                  get_attribute_list
+#define sss_ini_get_const_string_config_value  get_const_string_config_value
+#define sss_ini_get_config_obj(secs,attrs,cfg,flag,attr) \
+    get_config_item(secs,attrs,cfg,attr)
+
+#endif
+
+
+/* Initialize data structure */
+
+struct sss_ini_initdata* sss_ini_initdata_init(TALLOC_CTX *mem_ctx)
+{
+    return talloc_zero(mem_ctx, struct sss_ini_initdata);
+}
+
+
+
+/* Close file descriptor */
+
+void sss_ini_close_file(struct sss_ini_initdata *init_data)
+{
+    if (init_data == NULL) return;
+#ifdef HAVE_LIBINI_CONFIG_V1
+    if (init_data->file != NULL) {
+        ini_config_file_destroy(init_data->file);
+        init_data->file = NULL;
+    }
+#elif HAVE_LIBINI_CONFIG_V0
+    if (init_data->file != -1) {
+        close(init_data->file);
+        init_data->file = -1;
+    }
+#endif
+}
+
+
+
+/* Open configuration file */
+
+int sss_ini_config_file_open(struct sss_ini_initdata *init_data,
+                             const char *config_file)
+{
+#ifdef HAVE_LIBINI_CONFIG_V1
+    return ini_config_file_open(config_file,
+                                INI_META_STATS,
+                                &init_data->file);
+#elif HAVE_LIBINI_CONFIG_V0
+    return check_and_open_readonly(config_file, &init_data->file, 0, 0,
+                                   (S_IRUSR|S_IWUSR), CHECK_REG);
+#endif
+}
+
+
+
+/* Check configuration file permissions */
+
+int sss_ini_config_access_check(struct sss_ini_initdata *init_data)
+{
+#ifdef HAVE_LIBINI_CONFIG_V1
+    return ini_config_access_check(init_data->file,
+                                   INI_ACCESS_CHECK_MODE |
+                                   INI_ACCESS_CHECK_UID |
+                                   INI_ACCESS_CHECK_GID,
+                                   0, /* owned by root */
+                                   0, /* owned by root */
+                                   (S_IRUSR|S_IWUSR), /* rw------- */
+                                   0); /* check all there parts */
+#elif HAVE_LIBINI_CONFIG_V0
+    return EOK;
+#endif
+}
+
+
+
+/* Get cstat */
+
+int sss_ini_get_stat(struct sss_ini_initdata *init_data)
+{
+#ifdef HAVE_LIBINI_CONFIG_V1
+    init_data->cstat = ini_config_get_stat(init_data->file);
+
+    if (!init_data->cstat) return EIO;
+
+    return EOK;
+#elif HAVE_LIBINI_CONFIG_V0
+
+    return fstat(init_data->file, &init_data->cstat);
+#endif
+}
+
+
+
+/* Get mtime */
+
+int sss_ini_get_mtime(struct sss_ini_initdata *init_data,
+                      size_t timestr_len,
+                      char *timestr)
+{
+#ifdef HAVE_LIBINI_CONFIG_V1
+    return snprintf(timestr, timestr_len, "%llu",
+                    (long long unsigned)init_data->cstat->st_mtime);
+#elif HAVE_LIBINI_CONFIG_V0
+    return snprintf(timestr, timestr_len, "%llu",
+                    (long long unsigned)init_data->cstat.st_mtime);
+#endif
+}
+
+
+
+/* Print ini_config errors */
+
+void sss_ini_config_print_errors(char **error_list)
+{
+#ifdef HAVE_LIBINI_CONFIG_V1
+    unsigned count = 0;
+
+    if (!error_list) {
+        return;
+    }
+
+    while (error_list[count]) {
+        DEBUG(SSSDBG_CRIT_FAILURE, ("%s\n", error_list[count]));
+        count++;
+    }
+#endif
+
+    return;
+}
+
+
+
+/* Load configuration */
+
+int sss_ini_get_config(struct sss_ini_initdata *init_data,
+                       const char *config_file)
+{
+    int ret;
+#ifdef HAVE_LIBINI_CONFIG_V1
+
+    /* Create config object */
+    ret = ini_config_create(&(init_data->sssd_config));
+    if (ret != EOK) {
+        DEBUG(SSSDBG_FATAL_FAILURE,
+                ("Failed to create config object. Error %d.\n", ret));
+        return ret;
+    }
+
+    /* Parse file */
+    ret = ini_config_parse(init_data->file,
+                           INI_STOP_ON_ANY,
+                           INI_MV1S_OVERWRITE,
+                           0,
+                           init_data->sssd_config);
+
+    if (ret != EOK) {
+        DEBUG(SSSDBG_FATAL_FAILURE,
+                ("Failed to parse configuration. Error %d.\n", ret));
+
+        if (ini_config_error_count(init_data->sssd_config)) {
+            DEBUG(SSSDBG_FATAL_FAILURE,
+                    ("Errors detected while parsing: %s\n",
+                     ini_config_get_filename(init_data->file)));
+
+            ini_config_get_errors(init_data->sssd_config,
+                                  &init_data->error_list);
+            sss_ini_config_print_errors(init_data->error_list);
+            ini_config_free_errors(init_data->error_list);
+        }
+        ini_config_destroy(init_data->sssd_config);
+        return ret;
+    }
+
+    return ret;
+
+#elif HAVE_LIBINI_CONFIG_V0
+
+    /* Read the configuration into a collection */
+    ret = config_from_fd("sssd",
+                         init_data->file,
+                         config_file,
+                         &init_data->sssd_config,
+                         INI_STOP_ON_ANY,
+                         &init_data->error_list);
+    close(init_data->file);
+
+    if (ret != EOK) {
+        DEBUG(SSSDBG_FATAL_FAILURE,
+                ("Parse error reading configuration file [%s]\n",
+                 config_file));
+
+        print_file_parsing_errors(stderr, init_data->error_list);
+
+        free_ini_config_errors(init_data->error_list);
+        free_ini_config(init_data->sssd_config);
+
+        return ret;
+    }
+
+    return EOK;
+
+#endif
+}
+
+
+
+/* Get configuration object */
+
+int sss_ini_get_cfgobj(struct sss_ini_initdata *init_data,
+                       const char *section, const char *name)
+{
+    return sss_ini_get_config_obj(section,name, init_data->sssd_config,
+                                  INI_GET_FIRST_VALUE, &init_data->obj);
+}
+
+
+
+/* Check configuration object */
+
+int sss_ini_check_config_obj(struct sss_ini_initdata *init_data)
+{
+    if (init_data->obj == NULL) {
+        return ENOENT;
+    }
+
+    return EOK;
+}
+
+
+
+/* Get integer value */
+
+int sss_ini_get_int_config_value(struct sss_ini_initdata *init_data,
+                                 int strict, int def, int *error)
+{
+#ifdef HAVE_LIBINI_CONFIG_V1
+    return ini_get_int_config_value(init_data->obj, strict, def, error);
+#elif HAVE_LIBINI_CONFIG_V0
+    return get_int_config_value(init_data->obj, strict, def, error);
+#endif
+}
+
+
+
+/* Destroy ini config (v1) */
+
+void sss_ini_config_destroy(struct sss_ini_initdata *init_data)
+{
+    if (init_data == NULL) return;
+#ifdef HAVE_LIBINI_CONFIG_V1
+    if (init_data->sssd_config != NULL) {
+        ini_config_destroy(init_data->sssd_config);
+        init_data->sssd_config = NULL;
+    }
+#elif HAVE_LIBINI_CONFIG_V0
+    free_ini_config(init_data->sssd_config);
+#endif
+}
+
+
+
+/* Create LDIF */
+
+int sss_confdb_create_ldif(TALLOC_CTX *mem_ctx,
+                           struct sss_ini_initdata *init_data,
+                           const char **config_ldif)
+{
+    int ret, i, j;
+    char *ldif;
+    char *tmp_ldif;
+    char **sections;
+    int section_count;
+    char *dn;
+    char *tmp_dn;
+    char *sec_dn;
+    char **attrs;
+    int attr_count;
+    char *ldif_attr;
+    TALLOC_CTX *tmp_ctx;
+    size_t dn_size;
+    size_t ldif_len;
+    size_t attr_len;
+#ifdef HAVE_LIBINI_CONFIG_V1
+    struct value_obj *obj = NULL;
+#elif HAVE_LIBINI_CONFIG_V0
+    struct collection_item *obj = NULL;
+#endif
+
+    ldif_len = strlen(CONFDB_INTERNAL_LDIF);
+    ldif = talloc_array(mem_ctx, char, ldif_len+1);
+    if (!ldif) return ENOMEM;
+
+    tmp_ctx = talloc_new(ldif);
+    if (!tmp_ctx) {
+        ret = ENOMEM;
+        goto error;
+    }
+
+    memcpy(ldif, CONFDB_INTERNAL_LDIF, ldif_len);
+
+    /* Read in the collection and convert it to an LDIF */
+    /* Get the list of sections */
+    sections = sss_ini_get_sec_list(init_data->sssd_config,
+                                    &section_count, &ret);
+    if (ret != EOK) {
+        goto error;
+    }
+
+    for (i = 0; i < section_count; i++) {
+        const char *rdn = NULL;
+        DEBUG(SSSDBG_TRACE_FUNC,
+                ("Processing config section [%s]\n", sections[i]));
+        ret = parse_section(tmp_ctx, sections[i], &sec_dn, &rdn);
+        if (ret != EOK) {
+            goto error;
+        }
+
+        dn = talloc_asprintf(tmp_ctx,
+                             "dn: %s,cn=config\n"
+                             "cn: %s\n",
+                             sec_dn, rdn);
+        if (!dn) {
+            ret = ENOMEM;
+            free_section_list(sections);
+            goto error;
+        }
+        dn_size = strlen(dn);
+
+        /* Get all of the attributes and their values as LDIF */
+        attrs = sss_ini_get_attr_list(init_data->sssd_config, sections[i],
+                                   &attr_count, &ret);
+        if (ret != EOK) {
+            free_section_list(sections);
+            goto error;
+        }
+
+        for (j = 0; j < attr_count; j++) {
+            DEBUG(SSSDBG_TRACE_FUNC,
+                    ("Processing attribute [%s]\n", attrs[j]));
+            ret = sss_ini_get_config_obj(sections[i], attrs[j],
+                                         init_data->sssd_config,
+                                         INI_GET_FIRST_VALUE, &obj);
+            if (ret != EOK) goto error;
+
+            const char *value = sss_ini_get_const_string_config_value(obj, &ret);
+            if (ret != EOK) goto error;
+            if (value && value[0] == '\0') {
+                DEBUG(SSSDBG_CRIT_FAILURE,
+                        ("Attribute '%s' has empty value, ignoring\n",
+                         attrs[j]));
+                continue;
+            }
+
+            ldif_attr = talloc_asprintf(tmp_ctx,
+                                        "%s: %s\n", attrs[j], value);
+            DEBUG(SSSDBG_TRACE_ALL, ("%s", ldif_attr));
+
+            attr_len = strlen(ldif_attr);
+
+            tmp_dn = talloc_realloc(tmp_ctx, dn, char,
+                                    dn_size+attr_len+1);
+            if (!tmp_dn) {
+                ret = ENOMEM;
+                free_attribute_list(attrs);
+                free_section_list(sections);
+                goto error;
+            }
+            dn = tmp_dn;
+            memcpy(dn+dn_size, ldif_attr, attr_len+1);
+            dn_size += attr_len;
+        }
+
+        dn_size ++;
+        tmp_dn = talloc_realloc(tmp_ctx, dn, char,
+                                dn_size+1);
+        if (!tmp_dn) {
+            ret = ENOMEM;
+            free_attribute_list(attrs);
+            free_section_list(sections);
+            goto error;
+        }
+        dn = tmp_dn;
+        dn[dn_size-1] = '\n';
+        dn[dn_size] = '\0';
+
+        DEBUG(SSSDBG_TRACE_ALL, ("Section dn\n%s", dn));
+
+        tmp_ldif = talloc_realloc(mem_ctx, ldif, char,
+                                  ldif_len+dn_size+1);
+        if (!tmp_ldif) {
+            ret = ENOMEM;
+            free_attribute_list(attrs);
+            free_section_list(sections);
+            goto error;
+        }
+        ldif = tmp_ldif;
+        memcpy(ldif+ldif_len, dn, dn_size);
+        ldif_len += dn_size;
+
+        free_attribute_list(attrs);
+        talloc_free(dn);
+    }
+
+    ldif[ldif_len] = '\0';
+
+    free_section_list(sections);
+
+    *config_ldif = (const char *)ldif;
+    talloc_free(tmp_ctx);
+    return EOK;
+
+error:
+    talloc_free(ldif);
+    return ret;
+}
diff --git a/src/util/sss_ini.h b/src/util/sss_ini.h
new file mode 100644
index 000000000..3beaca15b
--- /dev/null
+++ b/src/util/sss_ini.h
@@ -0,0 +1,81 @@
+/*
+    SSSD
+
+    sss_ini.c
+
+    Authors:
+        Ondrej Kos <okos@redhat.com>
+
+    Copyright (C) 2013 Red Hat
+
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+
+#ifndef __SSS_INI_H__
+#define __SSS_INI_H__
+
+/* Structure declarations */
+
+/* INI data structure */
+struct sss_ini_initdata;
+
+
+/* Function declarations */
+
+/* Initialize data structure */
+struct sss_ini_initdata* sss_ini_initdata_init(TALLOC_CTX *tmp_ctx);
+
+/* Close file descriptor */
+void sss_ini_close_file(struct sss_ini_initdata *init_data);
+
+/* Open config file */
+int sss_ini_config_file_open(struct sss_ini_initdata *init_data,
+                             const char *config_file);
+
+/* Check file permissions */
+int sss_ini_config_access_check(struct sss_ini_initdata *init_data);
+
+/* Cstat */
+int sss_ini_get_stat(struct sss_ini_initdata *init_data);
+
+/* Get mtime */
+int sss_ini_get_mtime(struct sss_ini_initdata *init_data,
+                      size_t timestr_len,
+                      char *timestr);
+
+/* Load configuration */
+int sss_ini_get_config(struct sss_ini_initdata *init_data,
+                       const char *config_file);
+/* Get configuration object */
+int sss_ini_get_cfgobj(struct sss_ini_initdata *init_data,
+                       const char *section, const char *name);
+
+/* Check configuration object */
+int sss_ini_check_config_obj(struct sss_ini_initdata *init_data);
+
+/* Get int value */
+int sss_ini_get_int_config_value(struct sss_ini_initdata *init_data,
+                                 int strict, int def, int *error);
+
+/* Destroy ini config */
+void sss_ini_config_destroy(struct sss_ini_initdata *init_data);
+
+/* Create LDIF */
+int sss_confdb_create_ldif(TALLOC_CTX *mem_ctx,
+                           struct sss_ini_initdata *init_data,
+                           const char **config_ldif);
+
+#endif /* __SSS_INI_H__ */