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Diffstat (limited to 'contrib/chkpass/chkpass.c')
| -rw-r--r-- | contrib/chkpass/chkpass.c | 196 |
1 files changed, 0 insertions, 196 deletions
diff --git a/contrib/chkpass/chkpass.c b/contrib/chkpass/chkpass.c deleted file mode 100644 index b2e041f5ba8..00000000000 --- a/contrib/chkpass/chkpass.c +++ /dev/null @@ -1,196 +0,0 @@ -/* - * PostgreSQL type definitions for chkpass - * Written by D'Arcy J.M. Cain - * darcy@druid.net - * http://www.druid.net/darcy/ - * - * $Id: chkpass.c,v 1.7 2001/12/19 18:49:24 petere Exp $ - * best viewed with tabs set to 4 - */ - -#include "postgres.h" - -#include <stdio.h> -#include <string.h> -#include <time.h> -#include <unistd.h> -#ifdef HAVE_CRYPT_H -#include <crypt.h> -#endif - -#include "fmgr.h" - -/* - * This type encrypts it's input unless the first character is a colon. - * The output is the encrypted form with a leading colon. The output - * format is designed to allow dump and reload operations to work as - * expected without doing special tricks. - */ - - -/* - * This is the internal storage format for CHKPASSs. - * 15 is all I need but add a little buffer - */ - -typedef struct chkpass -{ - char password[16]; -} chkpass; - -/* - * Various forward declarations: - */ - -Datum chkpass_in(PG_FUNCTION_ARGS); -Datum chkpass_out(PG_FUNCTION_ARGS); -Datum chkpass_rout(PG_FUNCTION_ARGS); - -/* Only equal or not equal make sense */ -Datum chkpass_eq(PG_FUNCTION_ARGS); -Datum chkpass_ne(PG_FUNCTION_ARGS); - - -/* This function checks that the password is a good one - * It's just a placeholder for now */ -static int -verify_pass(const char *str) -{ - return 0; -} - -/* - * CHKPASS reader. - */ -PG_FUNCTION_INFO_V1(chkpass_in) -Datum -chkpass_in(PG_FUNCTION_ARGS) -{ - char *str = PG_GETARG_CSTRING(0); - chkpass *result; - char mysalt[4]; - static bool random_initialized = false; - static char salt_chars[] = - "./0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"; - - /* special case to let us enter encrypted passwords */ - if (*str == ':') - { - result = (chkpass *) palloc(sizeof(chkpass)); - strncpy(result->password, str + 1, 13); - result->password[13] = 0; - PG_RETURN_POINTER(result); - } - - if (verify_pass(str) != 0) - { - elog(ERROR, "chkpass_in: purported CHKPASS \"%s\" is a weak password", - str); - PG_RETURN_POINTER(NULL); - } - - result = (chkpass *) palloc(sizeof(chkpass)); - - if (!random_initialized) - { - srandom((unsigned int) time(NULL)); - random_initialized = true; - } - - mysalt[0] = salt_chars[random() & 0x3f]; - mysalt[1] = salt_chars[random() & 0x3f]; - mysalt[2] = 0; /* technically the terminator is not - * necessary but I like to play safe */ - strcpy(result->password, crypt(str, mysalt)); - PG_RETURN_POINTER(result); -} - -/* - * CHKPASS output function. - * Just like any string but we know it is max 15 (13 plus colon and terminator.) - */ - -PG_FUNCTION_INFO_V1(chkpass_out) -Datum -chkpass_out(PG_FUNCTION_ARGS) -{ - chkpass *password = (chkpass *) PG_GETARG_POINTER(0); - char *result; - - if (password == NULL) - PG_RETURN_POINTER(NULL); - - if ((result = (char *) palloc(16)) != NULL) - { - result[0] = ':'; - strcpy(result + 1, password->password); - } - - PG_RETURN_CSTRING(result); -} - - -/* - * special output function that doesn't output the colon - */ - -PG_FUNCTION_INFO_V1(chkpass_rout) -Datum -chkpass_rout(PG_FUNCTION_ARGS) -{ - chkpass *password = (chkpass *) PG_GETARG_POINTER(0); - text *result = NULL; - - if (password == NULL) - PG_RETURN_POINTER(NULL); - - if ((result = (text *) palloc(VARHDRSZ + 16)) != NULL) - { - result->vl_len = VARHDRSZ + strlen(password->password); - memcpy(result->vl_dat, password->password, strlen(password->password)); - } - - PG_RETURN_CSTRING(result); -} - - -/* - * Boolean tests - */ - -PG_FUNCTION_INFO_V1(chkpass_eq) -Datum -chkpass_eq(PG_FUNCTION_ARGS) -{ - chkpass *a1 = (chkpass *) PG_GETARG_POINTER(0); - text *a2 = (text *) PG_GETARG_TEXT_P(1); - char str[10]; - int sz = 8; - - if (!a1 || !a2) - PG_RETURN_BOOL(0); - - if (a2->vl_len < 12) - sz = a2->vl_len - 4; - strncpy(str, a2->vl_dat, sz); - str[sz] = 0; - PG_RETURN_BOOL(strcmp(a1->password, crypt(str, a1->password)) == 0); -} - -PG_FUNCTION_INFO_V1(chkpass_ne) -Datum -chkpass_ne(PG_FUNCTION_ARGS) -{ - chkpass *a1 = (chkpass *) PG_GETARG_POINTER(0); - text *a2 = (text *) PG_GETARG_TEXT_P(1); - char str[10]; - int sz = 8; - - if (!a1 || !a2) - PG_RETURN_BOOL(0); - if (a2->vl_len < 12) - sz = a2->vl_len - 4; - strncpy(str, a2->vl_dat, sz); - str[sz] = 0; - PG_RETURN_BOOL(strcmp(a1->password, crypt(str, a1->password)) != 0); -} |