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#include <postgres.h>
#include <libpq/password.h>
#include <libpq/hba.h>
#include <libpq/libpq.h>
#include <string.h>
#include <unistd.h>
int
verify_password(char *user, char *password, Port *port,
char *database, char *DataDir)
{
bool host_ok;
enum Userauth userauth;
char pw_file_name[PWFILE_NAME_SIZE+1];
char *pw_file_fullname;
FILE *pw_file;
char pw_file_line[255];
char *p, *test_user, *test_pw;
char salt[3];
find_hba_entry(DataDir, port->raddr.sin_addr, database,
&host_ok, &userauth, pw_file_name, true);
if(!host_ok) {
sprintf(PQerrormsg,
"verify_password: couldn't find entry for connecting host\n");
fputs(PQerrormsg, stderr);
pqdebug("%s", PQerrormsg);
return STATUS_ERROR;
}
if(userauth != Password) {
sprintf(PQerrormsg,
"verify_password: couldn't find entry of type 'password' "
"for this host\n");
fputs(PQerrormsg, stderr);
pqdebug("%s", PQerrormsg);
return STATUS_ERROR;
}
if(!pw_file_name || pw_file_name[0] == '\0') {
sprintf(PQerrormsg,
"verify_password: no password file specified\n");
fputs(PQerrormsg, stderr);
pqdebug("%s", PQerrormsg);
return STATUS_ERROR;
}
pw_file_fullname = (char *)malloc(strlen(DataDir) + strlen(pw_file_name) + 2);
strcpy(pw_file_fullname, DataDir);
strcat(pw_file_fullname, "/");
strcat(pw_file_fullname, pw_file_name);
pw_file = fopen(pw_file_fullname, "r");
if(!pw_file) {
sprintf(PQerrormsg,
"verify_password: couldn't open password file '%s'\n",
pw_file_fullname);
fputs(PQerrormsg, stderr);
pqdebug("%s", PQerrormsg);
return STATUS_ERROR;
}
while(!feof(pw_file)) {
fgets(pw_file_line, 255, pw_file);
p = pw_file_line;
test_user = strsep(&p, ":");
test_pw = p;
if(!test_user || !test_pw ||
test_user[0] == '\0' || test_pw[0] == '\0') {
continue;
}
/* kill the newline */
test_pw[strlen(test_pw)-1] = '\0';
strncpy(salt, test_pw, 2);
salt[2] = '\0';
if(strcmp(user, test_user) == 0) {
/* we're outta here one way or the other. */
fclose(pw_file);
if(strcmp(crypt(password, salt), test_pw) == 0) {
/* it matched. */
return STATUS_OK;
}
sprintf(PQerrormsg,
"verify_password: password mismatch for '%s'.\n",
user);
fputs(PQerrormsg, stderr);
pqdebug("%s", PQerrormsg);
return STATUS_ERROR;
}
}
sprintf(PQerrormsg,
"verify_password: user '%s' not found in password file.\n",
user);
fputs(PQerrormsg, stderr);
pqdebug("%s", PQerrormsg);
return STATUS_ERROR;
}
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