164562Sgshapiro/* 2261370Sgshapiro** Copyright (c) 1999-2002 Proofpoint, Inc. and its suppliers. 364562Sgshapiro** All rights reserved. 464562Sgshapiro** 564562Sgshapiro** By using this file, you agree to the terms and conditions set 664562Sgshapiro** forth in the LICENSE file which can be found at the top level of 764562Sgshapiro** the sendmail distribution. 864562Sgshapiro*/ 964562Sgshapiro 1090792Sgshapiro#include <sm/gen.h> 11266711SgshapiroSM_RCSID("@(#)$Id: smdb.c,v 8.59 2013-11-22 20:51:49 ca Exp $") 1264562Sgshapiro 1364562Sgshapiro#include <fcntl.h> 1464562Sgshapiro#include <stdlib.h> 1564562Sgshapiro#include <unistd.h> 1664562Sgshapiro 1764562Sgshapiro 1864562Sgshapiro#include <sendmail/sendmail.h> 1964562Sgshapiro#include <libsmdb/smdb.h> 2064562Sgshapiro 21141858Sgshapirostatic bool smdb_lockfile __P((int, int)); 22141858Sgshapiro 2390792Sgshapiro/* 2464562Sgshapiro** SMDB_MALLOC_DATABASE -- Allocates a database structure. 2564562Sgshapiro** 2664562Sgshapiro** Parameters: 2764562Sgshapiro** None 2864562Sgshapiro** 2964562Sgshapiro** Returns: 3064562Sgshapiro** An pointer to an allocated SMDB_DATABASE structure or 3164562Sgshapiro** NULL if it couldn't allocate the memory. 3264562Sgshapiro*/ 3364562Sgshapiro 3464562SgshapiroSMDB_DATABASE * 3564562Sgshapirosmdb_malloc_database() 3664562Sgshapiro{ 3764562Sgshapiro SMDB_DATABASE *db; 3864562Sgshapiro 3964562Sgshapiro db = (SMDB_DATABASE *) malloc(sizeof(SMDB_DATABASE)); 4064562Sgshapiro 4164562Sgshapiro if (db != NULL) 4290792Sgshapiro (void) memset(db, '\0', sizeof(SMDB_DATABASE)); 4364562Sgshapiro 4464562Sgshapiro return db; 4564562Sgshapiro} 4664562Sgshapiro 4764562Sgshapiro 4890792Sgshapiro/* 4964562Sgshapiro** SMDB_FREE_DATABASE -- Unallocates a database structure. 5064562Sgshapiro** 5164562Sgshapiro** Parameters: 5264562Sgshapiro** database -- a SMDB_DATABASE pointer to deallocate. 5364562Sgshapiro** 5464562Sgshapiro** Returns: 5564562Sgshapiro** None 5664562Sgshapiro*/ 5764562Sgshapiro 5864562Sgshapirovoid 5964562Sgshapirosmdb_free_database(database) 6064562Sgshapiro SMDB_DATABASE *database; 6164562Sgshapiro{ 6264562Sgshapiro if (database != NULL) 6364562Sgshapiro free(database); 6464562Sgshapiro} 6590792Sgshapiro/* 6666494Sgshapiro** SMDB_LOCKFILE -- lock a file using flock or (shudder) fcntl locking 6766494Sgshapiro** 6866494Sgshapiro** Parameters: 6966494Sgshapiro** fd -- the file descriptor of the file. 7066494Sgshapiro** type -- type of the lock. Bits can be: 7166494Sgshapiro** LOCK_EX -- exclusive lock. 7266494Sgshapiro** LOCK_NB -- non-blocking. 7366494Sgshapiro** 7466494Sgshapiro** Returns: 7590792Sgshapiro** true if the lock was acquired. 7690792Sgshapiro** false otherwise. 7766494Sgshapiro*/ 7864562Sgshapiro 7966494Sgshapirostatic bool 8066494Sgshapirosmdb_lockfile(fd, type) 8166494Sgshapiro int fd; 8266494Sgshapiro int type; 8366494Sgshapiro{ 8466494Sgshapiro int i; 8566494Sgshapiro int save_errno; 8666494Sgshapiro#if !HASFLOCK 8766494Sgshapiro int action; 8866494Sgshapiro struct flock lfd; 8966494Sgshapiro 9090792Sgshapiro (void) memset(&lfd, '\0', sizeof lfd); 9166494Sgshapiro if (bitset(LOCK_UN, type)) 9266494Sgshapiro lfd.l_type = F_UNLCK; 9366494Sgshapiro else if (bitset(LOCK_EX, type)) 9466494Sgshapiro lfd.l_type = F_WRLCK; 9566494Sgshapiro else 9666494Sgshapiro lfd.l_type = F_RDLCK; 9766494Sgshapiro 9866494Sgshapiro if (bitset(LOCK_NB, type)) 9966494Sgshapiro action = F_SETLK; 10066494Sgshapiro else 10166494Sgshapiro action = F_SETLKW; 10266494Sgshapiro 10366494Sgshapiro while ((i = fcntl(fd, action, &lfd)) < 0 && errno == EINTR) 10466494Sgshapiro continue; 10566494Sgshapiro if (i >= 0) 10690792Sgshapiro return true; 10766494Sgshapiro save_errno = errno; 10866494Sgshapiro 10966494Sgshapiro /* 11066494Sgshapiro ** On SunOS, if you are testing using -oQ/tmp/mqueue or 11166494Sgshapiro ** -oA/tmp/aliases or anything like that, and /tmp is mounted 11266494Sgshapiro ** as type "tmp" (that is, served from swap space), the 11366494Sgshapiro ** previous fcntl will fail with "Invalid argument" errors. 11466494Sgshapiro ** Since this is fairly common during testing, we will assume 11566494Sgshapiro ** that this indicates that the lock is successfully grabbed. 11666494Sgshapiro */ 11766494Sgshapiro 11866494Sgshapiro if (save_errno == EINVAL) 11990792Sgshapiro return true; 12066494Sgshapiro 12166494Sgshapiro if (!bitset(LOCK_NB, type) || 12266494Sgshapiro (save_errno != EACCES && save_errno != EAGAIN)) 12366494Sgshapiro { 12466494Sgshapiro# if 0 12594334Sgshapiro int omode = fcntl(fd, F_GETFL, NULL); 12694334Sgshapiro int euid = (int) geteuid(); 12794334Sgshapiro 12866494Sgshapiro syslog(LOG_ERR, "cannot lockf(%s%s, fd=%d, type=%o, omode=%o, euid=%d)", 12994334Sgshapiro filename, ext, fd, type, omode, euid); 13066494Sgshapiro# endif /* 0 */ 13194334Sgshapiro errno = save_errno; 13290792Sgshapiro return false; 13366494Sgshapiro } 13466494Sgshapiro#else /* !HASFLOCK */ 13566494Sgshapiro 13666494Sgshapiro while ((i = flock(fd, type)) < 0 && errno == EINTR) 13766494Sgshapiro continue; 13866494Sgshapiro if (i >= 0) 13990792Sgshapiro return true; 14066494Sgshapiro save_errno = errno; 14166494Sgshapiro 14266494Sgshapiro if (!bitset(LOCK_NB, type) || save_errno != EWOULDBLOCK) 14366494Sgshapiro { 14466494Sgshapiro# if 0 14594334Sgshapiro int omode = fcntl(fd, F_GETFL, NULL); 14694334Sgshapiro int euid = (int) geteuid(); 14794334Sgshapiro 14866494Sgshapiro syslog(LOG_ERR, "cannot flock(%s%s, fd=%d, type=%o, omode=%o, euid=%d)", 14994334Sgshapiro filename, ext, fd, type, omode, euid); 15066494Sgshapiro# endif /* 0 */ 15194334Sgshapiro errno = save_errno; 15290792Sgshapiro return false; 15366494Sgshapiro } 15466494Sgshapiro#endif /* !HASFLOCK */ 15566494Sgshapiro errno = save_errno; 15690792Sgshapiro return false; 15766494Sgshapiro} 15890792Sgshapiro/* 15964562Sgshapiro** SMDB_OPEN_DATABASE -- Opens a database. 16064562Sgshapiro** 16164562Sgshapiro** This opens a database. If type is SMDB_DEFAULT it tries to 16264562Sgshapiro** use a DB1 or DB2 hash. If that isn't available, it will try 16364562Sgshapiro** to use NDBM. If a specific type is given it will try to open 16464562Sgshapiro** a database of that type. 16564562Sgshapiro** 16664562Sgshapiro** Parameters: 16764562Sgshapiro** database -- An pointer to a SMDB_DATABASE pointer where the 16864562Sgshapiro** opened database will be stored. This should 16964562Sgshapiro** be unallocated. 17064562Sgshapiro** db_name -- The name of the database to open. Do not include 17164562Sgshapiro** the file name extension. 17264562Sgshapiro** mode -- The mode to set on the database file or files. 17364562Sgshapiro** mode_mask -- Mode bits that must match on an opened database. 17464562Sgshapiro** sff -- Flags to safefile. 17564562Sgshapiro** type -- The type of database to open. Supported types 17664562Sgshapiro** vary depending on what was compiled in. 17764562Sgshapiro** user_info -- Information on the user to use for file 17864562Sgshapiro** permissions. 17964562Sgshapiro** params -- Params specific to the database being opened. 18064562Sgshapiro** Only supports some DB hash options right now 18164562Sgshapiro** (see smdb_db_open() for details). 18264562Sgshapiro** 18364562Sgshapiro** Returns: 18464562Sgshapiro** SMDBE_OK -- Success. 18564562Sgshapiro** Anything else is an error. Look up more info about the 18664562Sgshapiro** error in the comments for the specific open() used. 18764562Sgshapiro*/ 18864562Sgshapiro 18964562Sgshapiroint 19064562Sgshapirosmdb_open_database(database, db_name, mode, mode_mask, sff, type, user_info, 19164562Sgshapiro params) 19264562Sgshapiro SMDB_DATABASE **database; 19364562Sgshapiro char *db_name; 19464562Sgshapiro int mode; 19564562Sgshapiro int mode_mask; 19664562Sgshapiro long sff; 19764562Sgshapiro SMDB_DBTYPE type; 19864562Sgshapiro SMDB_USER_INFO *user_info; 19964562Sgshapiro SMDB_DBPARAMS *params; 20064562Sgshapiro{ 20190792Sgshapiro bool type_was_default = false; 20264562Sgshapiro 20364562Sgshapiro if (type == SMDB_TYPE_DEFAULT) 20464562Sgshapiro { 20590792Sgshapiro type_was_default = true; 20664562Sgshapiro#ifdef NEWDB 20764562Sgshapiro type = SMDB_TYPE_HASH; 20864562Sgshapiro#else /* NEWDB */ 20964562Sgshapiro# ifdef NDBM 21064562Sgshapiro type = SMDB_TYPE_NDBM; 21164562Sgshapiro# endif /* NDBM */ 21264562Sgshapiro#endif /* NEWDB */ 21364562Sgshapiro } 21464562Sgshapiro 21564562Sgshapiro if (type == SMDB_TYPE_DEFAULT) 21664562Sgshapiro return SMDBE_UNKNOWN_DB_TYPE; 21764562Sgshapiro 21864562Sgshapiro if ((strncmp(type, SMDB_TYPE_HASH, SMDB_TYPE_HASH_LEN) == 0) || 21964562Sgshapiro (strncmp(type, SMDB_TYPE_BTREE, SMDB_TYPE_BTREE_LEN) == 0)) 22064562Sgshapiro { 22164562Sgshapiro#ifdef NEWDB 22290792Sgshapiro int result; 22390792Sgshapiro 22464562Sgshapiro result = smdb_db_open(database, db_name, mode, mode_mask, sff, 22564562Sgshapiro type, user_info, params); 22664562Sgshapiro# ifdef NDBM 22764562Sgshapiro if (result == ENOENT && type_was_default) 22864562Sgshapiro type = SMDB_TYPE_NDBM; 22964562Sgshapiro else 23064562Sgshapiro# endif /* NDBM */ 23164562Sgshapiro return result; 23264562Sgshapiro#else /* NEWDB */ 23364562Sgshapiro return SMDBE_UNSUPPORTED_DB_TYPE; 23464562Sgshapiro#endif /* NEWDB */ 23564562Sgshapiro } 23664562Sgshapiro 23764562Sgshapiro if (strncmp(type, SMDB_TYPE_NDBM, SMDB_TYPE_NDBM_LEN) == 0) 23864562Sgshapiro { 23964562Sgshapiro#ifdef NDBM 24090792Sgshapiro int result; 24190792Sgshapiro 24264562Sgshapiro result = smdb_ndbm_open(database, db_name, mode, mode_mask, 24364562Sgshapiro sff, type, user_info, params); 24464562Sgshapiro return result; 24564562Sgshapiro#else /* NDBM */ 24664562Sgshapiro return SMDBE_UNSUPPORTED_DB_TYPE; 24764562Sgshapiro#endif /* NDBM */ 24864562Sgshapiro } 24964562Sgshapiro 25064562Sgshapiro return SMDBE_UNKNOWN_DB_TYPE; 25164562Sgshapiro} 25290792Sgshapiro/* 25364562Sgshapiro** SMDB_ADD_EXTENSION -- Adds an extension to a file name. 25464562Sgshapiro** 25564562Sgshapiro** Just adds a . followed by a string to a db_name if there 25664562Sgshapiro** is room and the db_name does not already have that extension. 25764562Sgshapiro** 25864562Sgshapiro** Parameters: 25964562Sgshapiro** full_name -- The final file name. 26064562Sgshapiro** max_full_name_len -- The max length for full_name. 26164562Sgshapiro** db_name -- The name of the db. 26264562Sgshapiro** extension -- The extension to add. 26364562Sgshapiro** 26464562Sgshapiro** Returns: 26564562Sgshapiro** SMDBE_OK -- Success. 26664562Sgshapiro** Anything else is an error. Look up more info about the 26764562Sgshapiro** error in the comments for the specific open() used. 26864562Sgshapiro*/ 26964562Sgshapiro 27064562Sgshapiroint 27164562Sgshapirosmdb_add_extension(full_name, max_full_name_len, db_name, extension) 27264562Sgshapiro char *full_name; 27364562Sgshapiro int max_full_name_len; 27464562Sgshapiro char *db_name; 27564562Sgshapiro char *extension; 27664562Sgshapiro{ 27764562Sgshapiro int extension_len; 27864562Sgshapiro int db_name_len; 27964562Sgshapiro 28064562Sgshapiro if (full_name == NULL || db_name == NULL || extension == NULL) 28164562Sgshapiro return SMDBE_INVALID_PARAMETER; 28264562Sgshapiro 28364562Sgshapiro extension_len = strlen(extension); 28464562Sgshapiro db_name_len = strlen(db_name); 28564562Sgshapiro 28664562Sgshapiro if (extension_len + db_name_len + 2 > max_full_name_len) 28764562Sgshapiro return SMDBE_DB_NAME_TOO_LONG; 28864562Sgshapiro 28964562Sgshapiro if (db_name_len < extension_len + 1 || 29064562Sgshapiro db_name[db_name_len - extension_len - 1] != '.' || 29164562Sgshapiro strcmp(&db_name[db_name_len - extension_len], extension) != 0) 29290792Sgshapiro (void) sm_snprintf(full_name, max_full_name_len, "%s.%s", 29390792Sgshapiro db_name, extension); 29464562Sgshapiro else 29590792Sgshapiro (void) sm_strlcpy(full_name, db_name, max_full_name_len); 29664562Sgshapiro 29764562Sgshapiro return SMDBE_OK; 29864562Sgshapiro} 29990792Sgshapiro/* 30064562Sgshapiro** SMDB_LOCK_FILE -- Locks the database file. 30164562Sgshapiro** 30264562Sgshapiro** Locks the actual database file. 30364562Sgshapiro** 30464562Sgshapiro** Parameters: 30564562Sgshapiro** lock_fd -- The resulting descriptor for the locked file. 30664562Sgshapiro** db_name -- The name of the database without extension. 30764562Sgshapiro** mode -- The open mode. 30864562Sgshapiro** sff -- Flags to safefile. 30964562Sgshapiro** extension -- The extension for the file. 31064562Sgshapiro** 31164562Sgshapiro** Returns: 31264562Sgshapiro** SMDBE_OK -- Success, otherwise errno. 31364562Sgshapiro*/ 31464562Sgshapiro 31564562Sgshapiroint 31664562Sgshapirosmdb_lock_file(lock_fd, db_name, mode, sff, extension) 31764562Sgshapiro int *lock_fd; 31864562Sgshapiro char *db_name; 31964562Sgshapiro int mode; 32064562Sgshapiro long sff; 32164562Sgshapiro char *extension; 32264562Sgshapiro{ 32364562Sgshapiro int result; 32498121Sgshapiro char file_name[MAXPATHLEN]; 32564562Sgshapiro 32698121Sgshapiro result = smdb_add_extension(file_name, sizeof file_name, db_name, 32764562Sgshapiro extension); 32864562Sgshapiro if (result != SMDBE_OK) 32964562Sgshapiro return result; 33064562Sgshapiro 33198121Sgshapiro *lock_fd = safeopen(file_name, mode & ~O_TRUNC, DBMMODE, sff); 33264562Sgshapiro if (*lock_fd < 0) 33364562Sgshapiro return errno; 33464562Sgshapiro 33564562Sgshapiro return SMDBE_OK; 33664562Sgshapiro} 33790792Sgshapiro/* 33864562Sgshapiro** SMDB_UNLOCK_FILE -- Unlocks a file 33964562Sgshapiro** 34064562Sgshapiro** Unlocks a file. 34164562Sgshapiro** 34264562Sgshapiro** Parameters: 34364562Sgshapiro** lock_fd -- The descriptor for the locked file. 34464562Sgshapiro** 34564562Sgshapiro** Returns: 34664562Sgshapiro** SMDBE_OK -- Success, otherwise errno. 34764562Sgshapiro*/ 34864562Sgshapiro 34964562Sgshapiroint 35064562Sgshapirosmdb_unlock_file(lock_fd) 35164562Sgshapiro int lock_fd; 35264562Sgshapiro{ 35364562Sgshapiro int result; 35464562Sgshapiro 35564562Sgshapiro result = close(lock_fd); 35664562Sgshapiro if (result != 0) 35764562Sgshapiro return errno; 35864562Sgshapiro 35964562Sgshapiro return SMDBE_OK; 36064562Sgshapiro} 36190792Sgshapiro/* 36266494Sgshapiro** SMDB_LOCK_MAP -- Locks a database. 36366494Sgshapiro** 36466494Sgshapiro** Parameters: 36566494Sgshapiro** database -- database description. 36666494Sgshapiro** type -- type of the lock. Bits can be: 36766494Sgshapiro** LOCK_EX -- exclusive lock. 36866494Sgshapiro** LOCK_NB -- non-blocking. 36966494Sgshapiro** 37066494Sgshapiro** Returns: 37166494Sgshapiro** SMDBE_OK -- Success, otherwise errno. 37266494Sgshapiro*/ 37366494Sgshapiro 37466494Sgshapiroint 37566494Sgshapirosmdb_lock_map(database, type) 37666494Sgshapiro SMDB_DATABASE *database; 37766494Sgshapiro int type; 37866494Sgshapiro{ 37966494Sgshapiro int fd; 38066494Sgshapiro 38166494Sgshapiro fd = database->smdb_lockfd(database); 38266494Sgshapiro if (fd < 0) 38366494Sgshapiro return SMDBE_NOT_FOUND; 38466494Sgshapiro if (!smdb_lockfile(fd, type)) 38566494Sgshapiro return SMDBE_LOCK_NOT_GRANTED; 38666494Sgshapiro return SMDBE_OK; 38766494Sgshapiro} 38890792Sgshapiro/* 38966494Sgshapiro** SMDB_UNLOCK_MAP -- Unlocks a database 39066494Sgshapiro** 39166494Sgshapiro** Parameters: 39266494Sgshapiro** database -- database description. 39366494Sgshapiro** 39466494Sgshapiro** Returns: 39566494Sgshapiro** SMDBE_OK -- Success, otherwise errno. 39666494Sgshapiro*/ 39766494Sgshapiro 39866494Sgshapiroint 39966494Sgshapirosmdb_unlock_map(database) 40066494Sgshapiro SMDB_DATABASE *database; 40166494Sgshapiro{ 40266494Sgshapiro int fd; 40366494Sgshapiro 40466494Sgshapiro fd = database->smdb_lockfd(database); 40566494Sgshapiro if (fd < 0) 40666494Sgshapiro return SMDBE_NOT_FOUND; 40766494Sgshapiro if (!smdb_lockfile(fd, LOCK_UN)) 40866494Sgshapiro return SMDBE_LOCK_NOT_HELD; 40966494Sgshapiro return SMDBE_OK; 41066494Sgshapiro} 41190792Sgshapiro/* 41264562Sgshapiro** SMDB_SETUP_FILE -- Gets db file ready for use. 41364562Sgshapiro** 41464562Sgshapiro** Makes sure permissions on file are safe and creates it if it 41564562Sgshapiro** doesn't exist. 41664562Sgshapiro** 41764562Sgshapiro** Parameters: 41864562Sgshapiro** db_name -- The name of the database without extension. 41964562Sgshapiro** extension -- The extension. 42064562Sgshapiro** sff -- Flags to safefile. 42164562Sgshapiro** mode_mask -- Mode bits that must match. 42264562Sgshapiro** user_info -- Information on the user to use for file 42364562Sgshapiro** permissions. 42464562Sgshapiro** stat_info -- A place to put the stat info for the file. 42564562Sgshapiro** Returns: 42664562Sgshapiro** SMDBE_OK -- Success, otherwise errno. 42764562Sgshapiro*/ 42864562Sgshapiro 42964562Sgshapiroint 43064562Sgshapirosmdb_setup_file(db_name, extension, mode_mask, sff, user_info, stat_info) 43164562Sgshapiro char *db_name; 43264562Sgshapiro char *extension; 43364562Sgshapiro int mode_mask; 43464562Sgshapiro long sff; 43564562Sgshapiro SMDB_USER_INFO *user_info; 43664562Sgshapiro struct stat *stat_info; 43764562Sgshapiro{ 43864562Sgshapiro int st; 43964562Sgshapiro int result; 44098121Sgshapiro char db_file_name[MAXPATHLEN]; 44164562Sgshapiro 44298121Sgshapiro result = smdb_add_extension(db_file_name, sizeof db_file_name, db_name, 44364562Sgshapiro extension); 44464562Sgshapiro if (result != SMDBE_OK) 44564562Sgshapiro return result; 44664562Sgshapiro 44764562Sgshapiro st = safefile(db_file_name, user_info->smdbu_id, 44864562Sgshapiro user_info->smdbu_group_id, user_info->smdbu_name, 44964562Sgshapiro sff, mode_mask, stat_info); 45064562Sgshapiro if (st != 0) 45164562Sgshapiro return st; 45264562Sgshapiro 45364562Sgshapiro return SMDBE_OK; 45464562Sgshapiro} 45590792Sgshapiro/* 45664562Sgshapiro** SMDB_FILECHANGED -- Checks to see if a file changed. 45764562Sgshapiro** 45864562Sgshapiro** Compares the passed in stat_info with a current stat on 45964562Sgshapiro** the passed in file descriptor. Check filechanged for 46064562Sgshapiro** return values. 46164562Sgshapiro** 46264562Sgshapiro** Parameters: 46364562Sgshapiro** db_name -- The name of the database without extension. 46464562Sgshapiro** extension -- The extension. 46564562Sgshapiro** db_fd -- A file descriptor for the database file. 46664562Sgshapiro** stat_info -- An old stat_info. 46764562Sgshapiro** Returns: 46864562Sgshapiro** SMDBE_OK -- Success, otherwise errno. 46964562Sgshapiro*/ 47064562Sgshapiro 47164562Sgshapiroint 47264562Sgshapirosmdb_filechanged(db_name, extension, db_fd, stat_info) 47364562Sgshapiro char *db_name; 47464562Sgshapiro char *extension; 47564562Sgshapiro int db_fd; 47664562Sgshapiro struct stat *stat_info; 47764562Sgshapiro{ 47864562Sgshapiro int result; 47998121Sgshapiro char db_file_name[MAXPATHLEN]; 48064562Sgshapiro 48198121Sgshapiro result = smdb_add_extension(db_file_name, sizeof db_file_name, db_name, 48264562Sgshapiro extension); 48364562Sgshapiro if (result != SMDBE_OK) 48464562Sgshapiro return result; 48590792Sgshapiro return filechanged(db_file_name, db_fd, stat_info); 48664562Sgshapiro} 48790792Sgshapiro/* 48864562Sgshapiro** SMDB_PRINT_AVAILABLE_TYPES -- Prints the names of the available types. 48964562Sgshapiro** 49064562Sgshapiro** Parameters: 49164562Sgshapiro** None 49264562Sgshapiro** 49364562Sgshapiro** Returns: 49464562Sgshapiro** None 49564562Sgshapiro*/ 49664562Sgshapiro 49764562Sgshapirovoid 49864562Sgshapirosmdb_print_available_types() 49964562Sgshapiro{ 50064562Sgshapiro#ifdef NDBM 50164562Sgshapiro printf("dbm\n"); 50264562Sgshapiro#endif /* NDBM */ 50364562Sgshapiro#ifdef NEWDB 50464562Sgshapiro printf("hash\n"); 50564562Sgshapiro printf("btree\n"); 50664562Sgshapiro#endif /* NEWDB */ 50764562Sgshapiro} 50890792Sgshapiro/* 50964562Sgshapiro** SMDB_DB_DEFINITION -- Given a database type, return database definition 51064562Sgshapiro** 51164562Sgshapiro** Reads though a structure making an association with the database 51264562Sgshapiro** type and the required cpp define from sendmail/README. 51364562Sgshapiro** List size is dynamic and must be NULL terminated. 51464562Sgshapiro** 51564562Sgshapiro** Parameters: 51664562Sgshapiro** type -- The name of the database type. 51764562Sgshapiro** 51864562Sgshapiro** Returns: 51964562Sgshapiro** definition for type, otherwise NULL. 52064562Sgshapiro*/ 52164562Sgshapiro 52264562Sgshapirotypedef struct 52364562Sgshapiro{ 52464562Sgshapiro SMDB_DBTYPE type; 52564562Sgshapiro char *dbdef; 52664562Sgshapiro} dbtype; 52764562Sgshapiro 52864562Sgshapirostatic dbtype DatabaseDefs[] = 52964562Sgshapiro{ 53064562Sgshapiro { SMDB_TYPE_HASH, "NEWDB" }, 53164562Sgshapiro { SMDB_TYPE_BTREE, "NEWDB" }, 53264562Sgshapiro { SMDB_TYPE_NDBM, "NDBM" }, 53364562Sgshapiro { NULL, "OOPS" } 53464562Sgshapiro}; 53564562Sgshapiro 53664562Sgshapirochar * 53764562Sgshapirosmdb_db_definition(type) 53864562Sgshapiro SMDB_DBTYPE type; 53964562Sgshapiro{ 54064562Sgshapiro dbtype *ptr = DatabaseDefs; 54164562Sgshapiro 54264562Sgshapiro while (ptr != NULL && ptr->type != NULL) 54364562Sgshapiro { 54464562Sgshapiro if (strcmp(type, ptr->type) == 0) 54564562Sgshapiro return ptr->dbdef; 54664562Sgshapiro ptr++; 54764562Sgshapiro } 54864562Sgshapiro return NULL; 54964562Sgshapiro} 550