Rename server/ directory to src/

Also update BUILD.txt

1 files changed, 289 insertions, 0 deletions

diff --git a/src/krb5_plugin/sssd_krb5_locator_plugin.c b/src/krb5_plugin/sssd_krb5_locator_plugin.c
new file mode 100644
index 00000000..5e797333
--- /dev/null
+++ b/src/krb5_plugin/sssd_krb5_locator_plugin.c
@@ -0,0 +1,289 @@
+/*
+    Authors:
+        Sumit Bose <sbose@redhat.com>
+
+    Copyright (C) 2009 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/>.
+*/
+#define _GNU_SOURCE
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <sys/types.h>
+#include <netdb.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+
+#include <krb5/locate_plugin.h>
+
+#include "providers/krb5/krb5_common.h"
+
+#define BUFSIZE 512
+#define SSSD_KRB5_LOCATOR_DEBUG "SSSD_KRB5_LOCATOR_DEBUG"
+#define DEBUG_KEY "[sssd_krb5_locator] "
+#define PLUGIN_DEBUG(body) do { \
+    if (ctx->debug) { \
+        debug_fn body; \
+    } \
+} while(0);
+
+struct sssd_ctx {
+    char *sssd_realm;
+    struct addrinfo *sssd_kdc_addrinfo;
+    bool debug;
+};
+
+void debug_fn(const char *format, ...)
+{
+    va_list ap;
+    char *s = NULL;
+    int ret;
+
+    va_start(ap, format);
+
+    ret = vasprintf(&s, format, ap);
+    if (ret < 0) {
+        /* ENOMEM */
+        return;
+    }
+
+    va_end(ap);
+
+    fprintf(stderr, DEBUG_KEY "%s", s);
+    free(s);
+}
+
+static int get_kdcinfo(const char *realm, struct sssd_ctx *ctx)
+{
+    int ret;
+    char *kdcinfo_name = NULL;
+    size_t len;
+    uint8_t buf[BUFSIZE + 1];
+    uint8_t *p;
+    int fd = -1;
+
+    len = strlen(realm) + strlen(KDCINFO_TMPL);
+
+    kdcinfo_name = calloc(1, len + 1);
+    if (kdcinfo_name == NULL) {
+        PLUGIN_DEBUG(("malloc failed.\n"));
+        return ENOMEM;
+    }
+
+    ret = snprintf(kdcinfo_name, len, KDCINFO_TMPL, realm);
+    if (ret < 0) {
+        PLUGIN_DEBUG(("snprintf failed"));
+        ret = EINVAL;
+    }
+    kdcinfo_name[len] = '\0';
+
+    fd = open(kdcinfo_name, O_RDONLY);
+    if (fd == -1) {
+        PLUGIN_DEBUG(("open failed [%d][%s].\n", errno, strerror(errno)));
+        ret = errno;
+        goto done;
+    }
+
+    len = BUFSIZE;
+    p = buf;
+    memset(buf, 0, BUFSIZE+1);
+    while (len != 0 && (ret = read(fd, p, len)) != 0) {
+        if (ret == -1) {
+            if (errno == EINTR) continue;
+            PLUGIN_DEBUG(("read failed [%d][%s].\n", errno, strerror(errno)));
+            close(fd);
+            goto done;
+        }
+
+        len -= ret;
+        p += ret;
+    }
+    close(fd);
+
+    if (len == 0) {
+        PLUGIN_DEBUG(("Content of kdcinfo file [%s] is [%d] or larger.\n",
+                      kdcinfo_name, BUFSIZE));
+    }
+    PLUGIN_DEBUG(("Found kdcinfo [%s].\n", buf));
+
+    ret = getaddrinfo((char *) buf, "kerberos", NULL, &ctx->sssd_kdc_addrinfo);
+    if (ret != 0) {
+        PLUGIN_DEBUG(("getaddrinfo failed [%d][%s].\n", ret,
+                                                        gai_strerror(ret)));
+        if (ret == EAI_SYSTEM) {
+            PLUGIN_DEBUG(("getaddrinfo failed [%d][%s].\n", errno,
+                                                            strerror(errno)));
+        }
+        goto done;
+    }
+
+    ctx->sssd_realm = strdup(realm);
+    if (ctx->sssd_realm == NULL) {
+        PLUGIN_DEBUG(("strdup failed.\n"));
+        ret = ENOMEM;
+        goto done;
+    }
+
+
+
+done:
+    free(kdcinfo_name);
+    return ret;
+}
+
+krb5_error_code sssd_krb5_locator_init(krb5_context context,
+                                       void **private_data)
+{
+    struct sssd_ctx *ctx;
+    const char *dummy;
+
+    ctx = calloc(1,sizeof(struct sssd_ctx));
+    if (ctx == NULL) return ENOMEM;
+
+    dummy = getenv(SSSD_KRB5_LOCATOR_DEBUG);
+    if (dummy == NULL) {
+        ctx->debug = false;
+    } else {
+        ctx->debug = true;
+        PLUGIN_DEBUG(("sssd_krb5_locator_init called\n"));
+    }
+
+    *private_data = ctx;
+
+    return 0;
+}
+
+void sssd_krb5_locator_close(void *private_data)
+{
+    struct sssd_ctx *ctx;
+
+    if (private_data == NULL) return;
+
+    ctx = (struct sssd_ctx *) private_data;
+    PLUGIN_DEBUG(("sssd_krb5_locator_close called\n"));
+
+    freeaddrinfo(ctx->sssd_kdc_addrinfo);
+    free(ctx->sssd_realm);
+    free(ctx);
+    private_data = NULL;
+
+    return;
+}
+
+krb5_error_code sssd_krb5_locator_lookup(void *private_data,
+                    enum locate_service_type svc,
+                    const char *realm,
+                    int socktype,
+                    int family,
+                    int (*cbfunc)(void *, int, struct sockaddr *),
+                    void *cbdata)
+{
+    int ret;
+    struct addrinfo *ai;
+    struct sssd_ctx *ctx;
+    char hostip[NI_MAXHOST];
+
+    if (private_data == NULL) return KRB5_PLUGIN_NO_HANDLE;
+    ctx = (struct sssd_ctx *) private_data;
+
+    if (ctx->sssd_realm == NULL || strcmp(ctx->sssd_realm, realm) != 0) {
+        freeaddrinfo(ctx->sssd_kdc_addrinfo);
+        ctx->sssd_kdc_addrinfo = NULL;
+        free(ctx->sssd_realm);
+        ctx->sssd_realm = NULL;
+        ret = get_kdcinfo(realm, ctx);
+        if (ret != EOK) {
+            PLUGIN_DEBUG(("get_kdcinfo failed.\n"));
+            return KRB5_PLUGIN_NO_HANDLE;
+        }
+    }
+
+    PLUGIN_DEBUG(("sssd_realm[%s] requested realm[%s] family[%d] socktype[%d] "
+                  "locate_service[%d]\n", ctx->sssd_realm, realm, family,
+                                          socktype, svc));
+
+    switch (svc) {
+        case locate_service_kdc:
+        case locate_service_master_kdc:
+        case locate_service_kadmin:
+            break;
+        case locate_service_krb524:
+        case locate_service_kpasswd:
+            return KRB5_PLUGIN_NO_HANDLE;
+        default:
+            return EINVAL;
+    }
+
+    switch (family) {
+        case AF_UNSPEC:
+        case AF_INET:
+        case AF_INET6:
+            break;
+        default:
+            return KRB5_PLUGIN_NO_HANDLE;
+    }
+
+    switch (socktype) {
+        case SOCK_STREAM:
+        case SOCK_DGRAM:
+            break;
+        default:
+            return EINVAL;
+    }
+
+    if (strcmp(realm, ctx->sssd_realm) != 0)
+        return KRB5_PLUGIN_NO_HANDLE;
+
+    for (ai = ctx->sssd_kdc_addrinfo; ai != NULL; ai = ai->ai_next) {
+        ret = getnameinfo(ai->ai_addr, ai->ai_addrlen, hostip, NI_MAXHOST,
+                          NULL, 0, NI_NUMERICHOST);
+        if (ret != 0) {
+            PLUGIN_DEBUG(("getnameinfo failed [%d][%s].\n", ret,
+                          gai_strerror(ret)));
+            if (ret == EAI_SYSTEM) {
+                PLUGIN_DEBUG(("getnameinfo failed [%d][%s].\n", errno,
+                              strerror(errno)));
+            }
+        }
+        PLUGIN_DEBUG(("addr[%s] family[%d] socktype[%d] - ", hostip,
+                      ai->ai_family, ai->ai_socktype));
+
+        if ((family == AF_UNSPEC || ai->ai_family == family) &&
+            ai->ai_socktype == socktype) {
+
+            ret = cbfunc(cbdata, socktype, ai->ai_addr);
+            if (ret != 0) {
+                PLUGIN_DEBUG(("\ncbfunc failed\n"));
+            } else {
+                PLUGIN_DEBUG(("used\n"));
+            }
+        } else {
+            PLUGIN_DEBUG((" NOT used\n"));
+        }
+    }
+
+    return 0;
+}
+
+const krb5plugin_service_locate_ftable service_locator = {
+    0, /* version */
+    sssd_krb5_locator_init,
+    sssd_krb5_locator_close,
+    sssd_krb5_locator_lookup,
+};