Split proxy.c into smaller files

proxy.c was growing too large to manage (and some graphical
development tools could no longer open it because of memory
limitations).

This patch splits proxy.c into the following files:
proxy_init.c:   Setup routines for the plugin
proxy_id.c:     Functions to handle user and group lookups
proxy_auth.c:   Functions to handle PAM interactions
proxy_common.c: Common utility routines

1 files changed, 105 insertions, 0 deletions

diff --git a/src/providers/proxy/proxy.h b/src/providers/proxy/proxy.h
index d95e50efe..eefcce580 100644
--- a/src/providers/proxy/proxy.h
+++ b/src/providers/proxy/proxy.h
@@ -25,6 +25,111 @@
 #ifndef __PROXY_H__
 #define __PROXY_H__
 
+#include <nss.h>
+#include <errno.h>
+#include <pwd.h>
+#include <grp.h>
+#include <dlfcn.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+
+#include <security/pam_appl.h>
+#include <security/pam_modules.h>
+
+#include "util/util.h"
+#include "providers/dp_backend.h"
+#include "db/sysdb.h"
+#include "proxy.h"
+#include <dhash.h>
+
+struct proxy_nss_ops {
+    enum nss_status (*getpwnam_r)(const char *name, struct passwd *result,
+                                  char *buffer, size_t buflen, int *errnop);
+    enum nss_status (*getpwuid_r)(uid_t uid, struct passwd *result,
+                                  char *buffer, size_t buflen, int *errnop);
+    enum nss_status (*setpwent)(void);
+    enum nss_status (*getpwent_r)(struct passwd *result,
+                                  char *buffer, size_t buflen, int *errnop);
+    enum nss_status (*endpwent)(void);
+
+    enum nss_status (*getgrnam_r)(const char *name, struct group *result,
+                                  char *buffer, size_t buflen, int *errnop);
+    enum nss_status (*getgrgid_r)(gid_t gid, struct group *result,
+                                  char *buffer, size_t buflen, int *errnop);
+    enum nss_status (*setgrent)(void);
+    enum nss_status (*getgrent_r)(struct group *result,
+                                  char *buffer, size_t buflen, int *errnop);
+    enum nss_status (*endgrent)(void);
+    enum nss_status (*initgroups_dyn)(const char *user, gid_t group,
+                                      long int *start, long int *size,
+                                      gid_t **groups, long int limit,
+                                      int *errnop);
+};
+
+struct authtok_conv {
+    uint32_t authtok_size;
+    uint8_t *authtok;
+
+    uint32_t newauthtok_size;
+    uint8_t *newauthtok;
+
+    bool sent_old;
+};
+
+struct proxy_id_ctx {
+    struct be_ctx *be;
+    int entry_cache_timeout;
+    struct proxy_nss_ops ops;
+};
+
+struct proxy_auth_ctx {
+    struct be_ctx *be;
+    char *pam_target;
+
+    uint32_t max_children;
+    uint32_t running;
+    uint32_t next_id;
+    hash_table_t *request_table;
+    struct sbus_connection *sbus_srv;
+    int timeout_ms;
+};
+
+struct proxy_child_ctx {
+    struct proxy_auth_ctx *auth_ctx;
+    struct be_req *be_req;
+    struct pam_data *pd;
+
+    uint32_t id;
+    pid_t pid;
+    bool running;
+
+    struct sbus_connection *conn;
+    struct tevent_timer *timer;
+
+    struct tevent_req *init_req;
+};
+
+struct pc_init_ctx {
+    char *command;
+    pid_t pid;
+    struct tevent_timer *timeout;
+    struct tevent_signal *sige;
+    struct proxy_child_ctx *child_ctx;
+    struct sbus_connection *conn;
+};
+
 #define PROXY_CHILD_PIPE "private/proxy_child"
+#define DEFAULT_BUFSIZE 4096
+#define MAX_BUF_SIZE 1024*1024 /* max 1MiB */
+
+/* From proxy_common.c */
+void proxy_reply(struct be_req *req, int dp_err,
+                 int error, const char *errstr);
+
+/* From proxy_id.c */
+void proxy_get_account_info(struct be_req *breq);
+
+/* From proxy_auth.c */
+void proxy_pam_handler(struct be_req *req);
 
 #endif /* __PROXY_H__ */