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pool_hba.c
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pool_hba.c
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/* -*-pgsql-c-*- */
/*
*
* $Header$
*
* pgpool: a language independent connection pool server for PostgreSQL
* written by Tatsuo Ishii
*
* Portions Copyright (c) 2003-2012 PgPool Global Development Group
* Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California *
* Permission to use, copy, modify, and distribute this software and
* its documentation for any purpose and without fee is hereby
* granted, provided that the above copyright notice appear in all
* copies and that both that copyright notice and this permission
* notice appear in supporting documentation, and that the name of the
* author not be used in advertising or publicity pertaining to
* distribution of the software without specific, written prior
* permission. The author makes no representations about the
* suitability of this software for any purpose. It is provided "as
* is" without express or implied warranty.
*
* pool_hba.c.: Routines to handle host based authentication.
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <netdb.h>
#include "pool.h"
#include "pool_path.h"
#include "pool_ip.h"
#include "pool_stream.h"
#include "pool_config.h"
#include "parser/pool_memory.h"
#include "parser/pg_list.h"
#include "pool_passwd.h"
#define MULTI_VALUE_SEP "\001" /* delimiter for multi-valued column strings */
#define MAX_TOKEN 256
static List *hba_lines = NIL;
static List *hba_line_nums = NIL;
static char *hbaFileName;
static POOL_MEMORY_POOL *hba_memory_context = NULL;
static void sendAuthRequest(POOL_CONNECTION *frontend, AuthRequest areq);
static void auth_failed(POOL_CONNECTION *frontend);
static void close_all_backend_connections(void);
static bool hba_getauthmethod(POOL_CONNECTION *frontend);
static bool check_hba(POOL_CONNECTION *frontend);
static void parse_hba(List *line, int line_num, POOL_CONNECTION *frontend, bool *found_p, bool *error_p);
static void parse_hba_auth(ListCell **line_item, UserAuth *userauth_p, char **auth_arg_p, bool *error_p);
static bool check_user(char *user, char *param_str);
static bool check_db(char *dbname, char *user, char *param_str);
static void free_lines(List **lines, List **line_nums);
static void tokenize_file(const char *filename, FILE *file, List **lines, List **line_nums);
static char *tokenize_inc_file(const char *outer_filename, const char *inc_filename);
static bool pg_isblank(const char c);
static void next_token(FILE *fp, char *buf, int bufsz);
static char * next_token_expand(const char *filename, FILE *file);
static POOL_STATUS CheckMd5Auth(char *username);
#ifdef USE_PAM
#ifdef HAVE_PAM_PAM_APPL_H
#include <pam/pam_appl.h>
#endif
#ifdef HAVE_SECURITY_PAM_APPL_H
#include <security/pam_appl.h>
#endif
#define PGPOOL_PAM_SERVICE "pgpool" /* Service name passed to PAM */
static POOL_STATUS CheckPAMAuth(POOL_CONNECTION *frontend, char *user, char *password);
static int pam_passwd_conv_proc(int num_msg, const struct pam_message ** msg, struct pam_response ** resp, void *appdata_ptr);
/*
* recv_password_packet is usually used with authentications that require a client
* password. However, pgpool's hba function only uses it for PAM authentication,
* so declare a prototype here in "#ifdef USE_PAM" to avoid compilation warning.
*/
static char *recv_password_packet(POOL_CONNECTION *frontend);
static struct pam_conv pam_passw_conv = {
&pam_passwd_conv_proc,
NULL
};
static char *pam_passwd = NULL; /* Workaround for Solaris 2.6 brokenness */
static POOL_CONNECTION *pam_frontend_kludge; /* Workaround for passing
* POOL_CONNECTION *frontend
* into pam_passwd_conv_proc */
#endif /* USE_PAM */
/*
* read in hba config file
*/
int load_hba(char *hbapath)
{
FILE *file;
POOL_MEMORY_POOL *old_context;
if (hba_memory_context == NULL)
{
hba_memory_context = pool_memory_create(PARSER_BLOCK_SIZE);
if (hba_memory_context == NULL)
{
pool_error("load_hba: pool_memory_create() failed");
return -1;
}
}
/* switch memory context */
old_context = pool_memory_context_switch_to(hba_memory_context);
if (hba_lines || hba_line_nums)
free_lines(&hba_lines, &hba_line_nums);
file = fopen(hbapath, "r");
if (!file)
{
pool_error("could not open \"%s\". reason: %s",
hbapath, strerror(errno));
pool_memory_delete(hba_memory_context, 0);
/* switch to old memory context */
pool_memory_context_switch_to(old_context);
return -1;
}
pool_debug("loading \"%s\" for client authentication configuration file",
hbapath);
tokenize_file(hbapath, file, &hba_lines, &hba_line_nums);
fclose(file);
hbaFileName = pstrdup(hbapath);
/* switch to old memory context */
pool_memory_context_switch_to(old_context);
return 0;
}
/*
* do frontend <-> pgpool authentication based on pool_hba.conf
*/
void ClientAuthentication(POOL_CONNECTION *frontend)
{
POOL_STATUS status = POOL_ERROR;
if (! hba_getauthmethod(frontend))
{
pool_error("missing or erroneous pool_hba.conf file");
pool_send_error_message(frontend, frontend->protoVersion, "XX000",
"missing or erroneous pool_hba.conf file", "",
"See pgpool log for details.", __FILE__, __LINE__);
close_all_backend_connections();
/*
* use exit(2) since this is not so fatal. other entries in
* pool_hba.conf may be valid, so treat it as reject.
*/
child_exit(2);
}
switch (frontend->auth_method)
{
case uaReject:
{
/*
* This could have come from an explicit "reject" entry in
* pool_hba.conf, but more likely it means there was no matching
* entry. Take pity on the poor user and issue a helpful
* error message. NOTE: this is not a security breach,
* because all the info reported here is known at the frontend
* and must be assumed known to bad guys. We're merely helping
* out the less clueful good guys.
*/
char hostinfo[NI_MAXHOST];
char *errmessage;
int messagelen;
getnameinfo_all(&frontend->raddr.addr, frontend->raddr.salen,
hostinfo, sizeof(hostinfo),
NULL, 0,
NI_NUMERICHOST);
messagelen = sizeof(hostinfo) +
strlen(frontend->username) + strlen(frontend->database) + 80;
if ((errmessage = (char *)malloc(messagelen+1)) == NULL)
{
pool_error("ClientAuthentication: malloc failed: %s", strerror(errno));
child_exit(1);
}
#ifdef USE_SSL
snprintf(errmessage, messagelen+7, /* +7 is for "SSL off" */
"no pool_hba.conf entry for host \"%s\", user \"%s\", database \"%s\", %s",
hostinfo, frontend->username, frontend->database,
frontend->ssl ? "SSL on" : "SSL off");
#else
snprintf(errmessage, messagelen,
"no pool_hba.conf entry for host \"%s\", user \"%s\", database \"%s\"",
hostinfo, frontend->username, frontend->database);
#endif
pool_error("%s", errmessage);
pool_send_error_message(frontend, frontend->protoVersion, "XX000", errmessage,
"", "", __FILE__, __LINE__);
free(errmessage);
break;
}
/* case uaKrb4: */
/* break; */
/* case uaKrb5: */
/* break; */
/* case uaIdent: */
/* break; */
case uaMD5:
status = CheckMd5Auth(frontend->username);
break;
/* case uaCrypt: */
/* break; */
/* case uaPassword: */
/* break; */
#ifdef USE_PAM
case uaPAM:
pam_frontend_kludge = frontend;
status = CheckPAMAuth(frontend, frontend->username, "");
break;
#endif /* USE_PAM */
case uaTrust:
status = POOL_CONTINUE;
break;
}
if (status == POOL_CONTINUE)
sendAuthRequest(frontend, AUTH_REQ_OK);
else if (status != POOL_CONTINUE)
auth_failed(frontend);
}
static void sendAuthRequest(POOL_CONNECTION *frontend, AuthRequest areq)
{
int wsize; /* number of bytes to write */
int areq_nbo; /* areq in network byte order */
/*
* If AUTH_REQ_OK, then frontend is OK to connect __with_pgpool__.
* Do not send 'R' to the frontend, he still needs to authenticate
* himself with the backend.
*/
if (areq == AUTH_REQ_OK)
return;
/* request a password */
pool_write(frontend, "R", 1);
if (frontend->protoVersion == PROTO_MAJOR_V3)
{
/* if (areq == AUTH_REQ_MD5) */
/* wsize = htonl(sizeof(int)*2+4); */
/* else if (areq == AUTH_REQ_CRYPT) */
/* wsize = htonl(sizeof(int)*2+2); */
/* else */
wsize = htonl(sizeof(int)*2);
pool_write(frontend, &wsize, sizeof(int));
}
areq_nbo = htonl(areq);
pool_write(frontend, &areq_nbo, sizeof(int));
/* Add the salt for encrypted passwords. */
/* if (areq == AUTH_REQ_MD5) */
/* pq_sendbytes(&buf, port->md5Salt, 4); */
/* else if (areq == AUTH_REQ_CRYPT) */
/* pq_sendbytes(&buf, port->cryptSalt, 2); */
pool_flush(frontend);
}
#ifdef USE_PAM /* see the prototype comment */
/*
* Collect password response packet from frontend.
*
* Returns NULL if couldn't get password, else malloc'd string.
*/
static char *recv_password_packet(POOL_CONNECTION *frontend)
{
int rsize;
char *passwd;
char *returnVal;
if (frontend->protoVersion == PROTO_MAJOR_V3)
{
/* Expect 'p' message type */
char kind;
if (pool_read(frontend, &kind, 1) < 0)
return NULL;
if (kind != 'p')
{
pool_error("expected password response, got message type %c",
kind);
return NULL; /* bad message type */
}
}
/* pre-3.0 protocol does not send a message type */
if (pool_read(frontend, &rsize, sizeof(int)) < 0)
return NULL;
rsize = ntohl(rsize) - 4;
passwd = pool_read2(frontend, rsize); /* retrieve password */
if (passwd == NULL)
return NULL;
/* Do not echo password to logs, for security. */
pool_debug("received password packet from frontend for pgpool's HBA");
/*
* Return the received string. Note we do not attempt to do any
* character-set conversion on it; since we don't yet know the
* client's encoding, there wouldn't be much point.
*/
returnVal = strdup(passwd);
if (returnVal == NULL)
{
pool_error("recv_password_packet: strdup failed: %s", strerror(errno));
exit(1);
}
return returnVal;
}
#endif /* USE_PAM */
/*
* Tell the user the authentication failed.
*/
static void auth_failed(POOL_CONNECTION *frontend)
{
bool send_error_to_frontend = true;
int messagelen;
char *errmessage;
messagelen = strlen(frontend->username) + 100;
if ((errmessage = (char *)malloc(messagelen+1)) == NULL)
{
pool_error("auth_failed: malloc failed: %s", strerror(errno));
child_exit(1);
}
switch (frontend->auth_method)
{
case uaReject:
snprintf(errmessage, messagelen,
"authentication with pgpool failed for user \"%s\": host rejected",
frontend->username);
/*
* if uaReject, frontend should have received 'E' and disconnected already.
*/
send_error_to_frontend = false;
break;
/* case uaKrb4: */
/* snprintf(errmessage, messagelen, */
/* "Kerberos 4 authentication with pgpool failed for user \"%s\"", */
/* frontend->username); */
/* break; */
/* case uaKrb5: */
/* snprintf(errmessage, messagelen, */
/* "Kerberos 5 authentication with pgpool failed for user \"%s\"", */
/* frontend->username); */
/* break; */
case uaTrust:
snprintf(errmessage, messagelen,
"\"trust\" authentication with pgpool failed for user \"%s\"",
frontend->username);
break;
/* case uaIdent: */
/* snprintf(errmessage, messagelen, */
/* "Ident authentication with pgpool failed for user \"%s\"", */
/* frontend->username); */
/* break; */
case uaMD5:
snprintf(errmessage, messagelen,
"\"MD5\" authentication with pgpool failed for user \"%s\"",
frontend->username);
break;
/* case uaCrypt: */
/* case uaPassword: */
/* snprintf(errmessage, messagelen, */
/* "password authentication with pgpool failed for user \"%s\"", */
/* frontend->username); */
/* break; */
#ifdef USE_PAM
case uaPAM:
snprintf(errmessage, messagelen,
"PAM authentication with pgpool failed for user \"%s\"",
frontend->username);
break;
#endif /* USE_PAM */
default:
snprintf(errmessage, messagelen,
"authentication with pgpool failed for user \"%s\": invalid authentication method",
frontend->username);
break;
}
pool_error("%s", errmessage);
if (send_error_to_frontend)
pool_send_error_message(frontend, frontend->protoVersion, "XX000", errmessage,
"", "", __FILE__, __LINE__);
/*
* don't need to free(errmessage). I will just kill myself.
*/
close_all_backend_connections();
child_exit(2);
}
/*
* Close all of the cached backend connections.
*
* This is exactly the same as send_frontend_exits() in child.c.
*/
static void close_all_backend_connections(void)
{
int i;
POOL_CONNECTION_POOL *p = pool_connection_pool;
#ifdef HAVE_SIGPROCMASK
sigset_t oldmask;
#else
int oldmask;
#endif
POOL_SETMASK2(&BlockSig, &oldmask);
for (i=0;i<pool_config->max_pool;i++, p++)
{
if (!MASTER_CONNECTION(p))
continue;
if (MASTER_CONNECTION(p)->sp->user == NULL)
continue;
pool_send_frontend_exits(p);
}
POOL_SETMASK(&oldmask);
}
/*
* Determine what authentication method should be used when accessing database
* "database" from frontend "raddr", user "user". Return the method and
* an optional argument (stored in fields of *frontend), and true for success.
*
* Note that false indicates a problem with the hba config file.
* If the file is OK but does not contain any entry matching the request,
* we return true and method = uaReject.
*/
static bool hba_getauthmethod(POOL_CONNECTION *frontend)
{
if (check_hba(frontend))
return true;
else
return false;
}
/*
* Scan the (pre-parsed) hba file line by line, looking for a match
* to the port's connection request.
*/
static bool check_hba(POOL_CONNECTION *frontend)
{
bool found_entry = false;
bool error = false;
ListCell *line;
ListCell *line_num;
forboth(line, hba_lines, line_num, hba_line_nums)
{
parse_hba(lfirst(line), lfirst_int(line_num),
frontend, &found_entry, &error);
if (found_entry || error)
break;
}
if (!error)
{
/* If no matching entry was found, synthesize 'reject' entry. */
if (!found_entry)
frontend->auth_method = uaReject;
return true;
}
else
return false;
}
/*
* Process one line from the hba config file.
*
* See if it applies to a connection from a frontend with IP address
* frontend->raddr to a database named frontend->database. If so, return
* *found_p true and fill in the auth arguments into the appropriate
* frontend fields. If not, leave *found_p as it was. If the record has
* a syntax error, return *error_p true, after issuing a message to the
* log. If no error, leave *error_p as it was.
*/
static void parse_hba(List *line, int line_num, POOL_CONNECTION *frontend,
bool *found_p, bool *error_p)
{
char *token;
char *db, *db_tmp;
char *user, *user_tmp;
struct addrinfo *gai_result;
struct addrinfo hints;
int ret;
struct sockaddr_storage addr;
struct sockaddr_storage mask;
char *cidr_slash;
ListCell *line_item;
line_item = list_head(line);
/* Check the record type. */
token = lfirst(line_item);
if (strcmp(token, "local") == 0)
{
/* Get the database. */
line_item = lnext(line_item);
if (!line_item)
goto hba_syntax;
db = lfirst(line_item);
/* Get the user. */
line_item = lnext(line_item);
if (!line_item)
goto hba_syntax;
user = lfirst(line_item);
line_item = lnext(line_item);
if (!line_item)
goto hba_syntax;
/* Read the rest of the line. */
parse_hba_auth(&line_item, &frontend->auth_method,
&frontend->auth_arg, error_p);
if (*error_p)
goto hba_syntax;
/* Disallow auth methods that always need TCP/IP sockets to work */
/*
if (frontend->auth_method == uaKrb4 ||
frontend->auth_method == uaKrb5)
goto hba_syntax;
*/
/* Does not match if connection isn't AF_UNIX */
if (!IS_AF_UNIX(frontend->raddr.addr.ss_family))
return;
}
else if (strcmp(token, "host") == 0
|| strcmp(token, "hostssl") == 0
|| strcmp(token, "hostnossl") == 0)
{
if (token[4] == 's') /* "hostssl" */
{
#ifdef USE_SSL
/* Record does not match if we are not on an SSL connection */
if (!frontend->ssl)
return;
/* Placeholder to require specific SSL level, perhaps? */
/* Or a client certificate */
/* Since we were on SSL, proceed as with normal 'host' mode */
#else
/* We don't accept this keyword at all if no SSL support */
goto hba_syntax;
#endif
}
#ifdef USE_SSL
else if (token[4] == 'n') /* "hostnossl" */
{
/* Record does not match if we are on an SSL connection */
if (frontend->ssl)
return;
}
#endif
/* Get the database. */
line_item = lnext(line_item);
if (!line_item)
goto hba_syntax;
db = lfirst(line_item);
/* Get the user. */
line_item = lnext(line_item);
if (!line_item)
goto hba_syntax;
user = lfirst(line_item);
/* Read the IP address field. (with or without CIDR netmask) */
line_item = lnext(line_item);
if (!line_item)
goto hba_syntax;
token = lfirst(line_item);
/* Check if it has a CIDR suffix and if so isolate it */
cidr_slash = strchr(token, '/');
if (cidr_slash)
*cidr_slash = '\0';
/* Get the IP address either way */
hints.ai_flags = AI_NUMERICHOST;
hints.ai_family = PF_UNSPEC;
hints.ai_socktype = 0;
hints.ai_protocol = 0;
hints.ai_addrlen = 0;
hints.ai_canonname = NULL;
hints.ai_addr = NULL;
hints.ai_next = NULL;
ret = getaddrinfo_all(token, NULL, &hints, &gai_result);
if (ret || !gai_result)
{
pool_log("invalid IP address \"%s\" in file \"%s\" line %d: %s",
token, hbaFileName, line_num, gai_strerror(ret));
if (cidr_slash)
*cidr_slash = '/';
if (gai_result)
freeaddrinfo_all(hints.ai_family, gai_result);
goto hba_other_error;
}
if (cidr_slash)
*cidr_slash = '/';
memcpy(&addr, gai_result->ai_addr, gai_result->ai_addrlen);
freeaddrinfo_all(hints.ai_family, gai_result);
/* Get the netmask */
if (cidr_slash)
{
if (SockAddr_cidr_mask(&mask, cidr_slash + 1, addr.ss_family) < 0)
goto hba_syntax;
}
else
{
/* Read the mask field. */
line_item = lnext(line_item);
if (!line_item)
goto hba_syntax;
token = lfirst(line_item);
ret = getaddrinfo_all(token, NULL, &hints, &gai_result);
if (ret || !gai_result)
{
pool_log("invalid IP mask \"%s\" in file \"%s\" line %d: %s",
token, hbaFileName, line_num, gai_strerror(ret));
if (gai_result)
freeaddrinfo_all(hints.ai_family, gai_result);
goto hba_other_error;
}
memcpy(&mask, gai_result->ai_addr, gai_result->ai_addrlen);
freeaddrinfo_all(hints.ai_family, gai_result);
if (addr.ss_family != mask.ss_family)
{
pool_log("IP address and mask do not match in file \"%s\" line %d",
hbaFileName, line_num);
goto hba_other_error;
}
}
if (addr.ss_family != frontend->raddr.addr.ss_family)
{
/*
* Wrong address family. We allow only one case: if the file
* has IPv4 and the port is IPv6, promote the file address to
* IPv6 and try to match that way.
*/
#ifdef HAVE_IPV6
if (addr.ss_family == AF_INET && frontend->raddr.addr.ss_family == AF_INET6)
{
promote_v4_to_v6_addr(&addr);
promote_v4_to_v6_mask(&mask);
}
else
#endif /* HAVE_IPV6 */
{
/* Line doesn't match client port, so ignore it. */
return;
}
}
/* Ignore line if client port is not in the matching addr range. */
if (!rangeSockAddr(&frontend->raddr.addr, &addr, &mask))
return;
/* Read the rest of the line. */
line_item = lnext(line_item);
if (!line_item)
goto hba_syntax;
parse_hba_auth(&line_item, &frontend->auth_method,
&frontend->auth_arg, error_p);
if (*error_p)
goto hba_syntax;
}
else
goto hba_syntax;
/* Does the entry match database and user? */
/*
* duplicate db and username since strtok() in check_db() and check_user()
* will override '\001' with '\0'.
*/
db_tmp = strdup(db);
if (db_tmp == NULL)
{
pool_error("parse_hba: strdup failed: %s", strerror(errno));
exit(1);
}
user_tmp = strdup(user);
if (user_tmp == NULL)
{
pool_error("parse_hba: strdup failed: %s", strerror(errno));
exit(1);
}
if (!check_db(frontend->database, frontend->username, db_tmp))
return;
if (!check_user(frontend->username, user_tmp))
return;
free(db_tmp);
free(user_tmp);
/* Success */
*found_p = true;
return;
hba_syntax:
if (line_item)
pool_log("invalid entry in file \"%s\" at line %d, token \"%s\"",
hbaFileName, line_num, (char *) lfirst(line_item));
else
pool_log("missing field in file \"%s\" at end of line %d",
hbaFileName, line_num);
/* Come here if suitable message already logged */
hba_other_error:
*error_p = true;
}
/*
* Scan the rest of a host record (after the mask field)
* and return the interpretation of it as *userauth_p, *auth_arg_p, and
* *error_p. *line_item points to the next token of the line, and is
* advanced over successfully-read tokens.
*/
static void parse_hba_auth(ListCell **line_item, UserAuth *userauth_p,
char **auth_arg_p, bool *error_p)
{
char *token;
*auth_arg_p = NULL;
if (!*line_item)
{
*error_p = true;
return;
}
token = lfirst(*line_item);
if (strcmp(token, "trust") == 0)
*userauth_p = uaTrust;
/*
else if (strcmp(token, "ident") == 0)
*userauth_p = uaIdent;
else if (strcmp(token, "password") == 0)
*userauth_p = uaPassword;
else if (strcmp(token, "krb4") == 0)
*userauth_p = uaKrb4;
else if (strcmp(token, "krb5") == 0)
*userauth_p = uaKrb5;
*/
else if (strcmp(token, "reject") == 0)
*userauth_p = uaReject;
else if (strcmp(token, "md5") == 0)
*userauth_p = uaMD5;
/*
else if (strcmp(token, "crypt") == 0)
*userauth_p = uaCrypt;
*/
#ifdef USE_PAM
else if (strcmp(token, "pam") == 0)
*userauth_p = uaPAM;
#endif /* USE_PAM */
else
{
*error_p = true;
return;
}
*line_item = lnext(*line_item);
/* Get the authentication argument token, if any */
if (*line_item)
{
token = lfirst(*line_item);
*auth_arg_p = strdup(token);
if (*auth_arg_p == NULL)
{
pool_error("parse_hba_auth: strdup failed: %s", strerror(errno));
exit(1);
}
*line_item = lnext(*line_item);
/* If there is more on the line, it is an error */
if (*line_item)
*error_p = true;
}
}
/*
* Check comma user list for a specific user, handle group names.
*/
static bool check_user(char *user, char *param_str)
{
char *tok;
for (tok = strtok(param_str, MULTI_VALUE_SEP);
tok != NULL; tok = strtok(NULL, MULTI_VALUE_SEP))
{
if (tok[0] == '+')
{
/*
* pgpool cannot accept groups. commented lines below are the
* original code.
*/
pool_error("group token \"+\" is not supported in pgpool");
return false;
/* if (check_group(tok + 1, user)) */
/* return true; */
}
else if (strcmp(tok, user) == 0 || strcmp(tok, "all\n") == 0)
return true;
}
return false;
}
/*
* Check to see if db/user combination matches param string.
*/
static bool check_db(char *dbname, char *user, char *param_str)
{
char *tok;
for (tok = strtok(param_str, MULTI_VALUE_SEP);
tok != NULL; tok = strtok(NULL, MULTI_VALUE_SEP))
{
if (strcmp(tok, "all\n") == 0)
return true;
else if (strcmp(tok, "sameuser\n") == 0)
{
if (strcmp(dbname, user) == 0)
return true;
}
else if (strcmp(tok, "samegroup\n") == 0)
{
/*
* pgpool cannot accept groups. commented lines below are the
* original code.
*/
pool_error("group token \"samegroup\" is not supported in pgpool");
return false;
/* if (check_group(dbname, user)) */
/* return true; */
}
else if (strcmp(tok, dbname) == 0)
return true;
}
return false;
}
/*
* tokenize the given file, storing the resulting data into two lists:
* a list of sublists, each sublist containing the tokens in a line of
* the file, and a list of line numbers.
*
* filename must be the absolute path to the target file.
*/
static void tokenize_file(const char *filename, FILE *file,
List **lines, List **line_nums)
{
List *current_line = NIL;
int line_number = 1;
char *buf;
*lines = *line_nums = NIL;
while (!feof(file))
{
buf = next_token_expand(filename, file);
/* add token to list, unless we are at EOL or comment start */
if (buf[0])
{
if (current_line == NIL)
{
/* make a new line List, record its line number */
current_line = lappend(current_line, buf);
*lines = lappend(*lines, current_line);
*line_nums = lappend_int(*line_nums, line_number);
}
else
{
/* append token to current line's list */
current_line = lappend(current_line, buf);
}
}
else
{
/* we are at real or logical EOL, so force a new line List */
current_line = NIL;
/* Advance line number whenever we reach EOL */
line_number++;
/* Don't forget to free the next_token_expand result */
free(buf);
}
}
}
static char * tokenize_inc_file(const char *outer_filename,
const char *inc_filename)
{
char *inc_fullname;
FILE *inc_file;
List *inc_lines;
List *inc_line_nums;
ListCell *line;
char *comma_str;
if (is_absolute_path(inc_filename))
{
/* absolute path is taken as-is */
inc_fullname = strdup(inc_filename);
if (inc_fullname == NULL)
{
pool_error("tokenize_inc_file: strdup failed: %s", strerror(errno));
exit(1);
}
}
else
{
/* relative path is relative to dir of calling file */
inc_fullname = (char *)malloc(strlen(outer_filename) + 1 +
strlen(inc_filename) + 1);
if (inc_fullname == NULL)
{
pool_error("tokenize_inc_file: malloc failed: %s", strerror(errno));
exit(1);
}
strcpy(inc_fullname, outer_filename);
get_parent_directory(inc_fullname);
join_path_components(inc_fullname, inc_fullname, inc_filename);
canonicalize_path(inc_fullname);
}
inc_file = fopen(inc_fullname, "r");
if (inc_file == NULL)
{
char *returnVal;
pool_error("could not open secondary authentication file \"@%s\" as \"%s\": reason: %s",