1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449
|
/*
WWW-SQL - parses HTML files and inserts information from MySQL databases
Copyright (C) 1997 James Henstridge <james@daa.com.au>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/* mysql.c
* contains all the database specific functions for www-sql. At the moment,
* this is the only such file, but in the future, there may be implementations
* for other database systems.
*/
#include <mysql.h>
#include "cgi.h"
#include "cmds.h"
#define checkConn(f) if (conn == NULL) {\
fprintf(yyout, "<p>%s: no connection established</p>\n", f);\
return; }
/* Define the query info structure. To enable multiple queries, we make
* a linked list.
*/
typedef struct qh_struct {
char *name;
MYSQL_RES *res;
MYSQL_ROW row;
struct qh_struct *next;
} qHandle;
qHandle *firstQuery = NULL;
MYSQL *conn = NULL;
#define isNum(n) (n >= '0' && n <= '9')
/* These functions are helpers for print_loop */
int dbLoopSetup(char *name, void **data) {
qHandle *qh;
qh = firstQuery;
while (qh != NULL) {
if (!strcmp(qh->name, name)) break;
qh = qh->next;
}
if (qh == NULL) {
fprintf(yyout, "<p><b>print_loop</b>: couldn't find query handle %s</p>\n",
name);
return -1;
}
*data = qh;
mysql_data_seek(qh->res, 0);
qh->row = mysql_fetch_row(qh->res);
return (qh->row != NULL);
}
int dbLoopNext(void *data) {
qHandle *qh = (qHandle *)data;
qh->row = mysql_fetch_row(qh->res);
return (qh->row != NULL);
}
/* This function is used as a hook to clean up any database related stuff
* when www-sql closes */
void dbCleanUp() {
if (conn != NULL)
mysql_close(conn);
}
/* This function acts is used as a hook by substVars to do expansions of
* query fields. */
char *substField(char *inp, int *toklen) {
qHandle *qh;
int len, len2, i;
for (qh = firstQuery; qh != NULL; qh = qh->next)
if (!strncmp(inp, qh->name, len = strlen(qh->name)) && inp[len] == '.') {
len++;
if (isNum(inp[len])) {
i = atoi(&inp[len]);
while (isNum(inp[len])) len++;
} else {
/* added a fix so that www-sql doesn't get it wrong if you have one
* variable that's name is a prefix of an other.
* Thanks Eduardo Trapani <etrapani@unesco.org.uy>
* I have implemented similar fixes in pgsql.c and cmds.c */
int field = mysql_num_fields(qh->res), longest = 0;
for (i = 0; i < mysql_num_fields(qh->res); i++)
if (!strncmp(&inp[len], mysql_fetch_fields(qh->res)[i].name,
len2 = strlen(mysql_fetch_fields(qh->res)[i].name)) &&
len2 > longest) {
longest = len2;
field = i;
}
len += longest;
i = field;
}
if (i >= mysql_num_fields(qh->res) || qh->row == NULL) {
*toklen = 0;
return "Column out of range: ";
}
*toklen = len;
if (qh->row[i] == NULL)
return "";
else
return qh->row[i];
}
*toklen = 0;
return NULL;
}
void cmdConnect(int argc, char *argv[]) {
char *host = NULL, *user = SQL_USER, *pass = SQL_PASS;
int h=0, u=0, p=0;
if (conn != NULL)
mysql_close(conn);
if (argc > 2) {
user = substVars(argv[1]);
pass = substVars(argv[2]);
u=1; p=1;
} else if (argc > 1) {
user = substVars(argv[1]);
pass = NULL;
u=1;
}
if (argc > 0) {
host = substVars(argv[0]);
h=1;
}
conn = xmalloc(sizeof(MYSQL));
mysql_real_connect(conn, host, user, pass, 0, 0, 0, 0);
#ifdef mysql_errno
if (mysql_errno(conn)) {
fprintf(yyout, "<p>Connect: %s</p>\n", mysql_error(conn));
mysql_close(conn);
free(conn);
conn = NULL;
}
#endif
if (h) free(host);
if (u) free(user);
if (p) free(pass);
}
void cmdClose(int argc, char *argv[]) {
if (conn != NULL) {
mysql_close(conn);
free(conn);
conn = NULL;
}
}
void cmdDatabase(int argc, char *argv[]) {
char *tmp;
checkNumArgs(1,"database");
checkConn("database");
tmp = substVars(argv[0]);
if (mysql_select_db(conn, tmp)) {
fprintf(yyout, "<p>Database: %s</p>\n", mysql_error(conn));
}
free(tmp);
}
void cmdQuery(int argc, char *argv[]) {
char *tmp, buf[21];
qHandle *qh;
MYSQL_RES *res;
checkNumArgs(1,"query");
checkConn("query");
tmp = substVars(argv[0]);
if (mysql_query(conn, tmp) < 0) {
fprintf(yyout, "<p>Query failed: %s</p>\n", mysql_error(conn));
free(tmp);
setVar("AFFECTED_ROWS", "0");
setVar("INSERT_ID", "-1");
return;
}
free(tmp);
sprintf(buf, "%ld", mysql_affected_rows(conn));
setVar("AFFECTED_ROWS", buf);
sprintf(buf, "%ld", mysql_insert_id(conn));
setVar("INSERT_ID", buf);
/* if the query has no body, don't set up query handle (ie for INSERT) */
if ((res = mysql_store_result(conn)) == NULL) {
return;
}
if (argc < 2) {
mysql_free_result(res);
fprintf(yyout, "<p>Query: query requires a handle name</p>\n");
return;
}
qh = xmalloc(sizeof(qHandle));
qh->name = xstrdup(argv[1]);
qh->res = res;
qh->row = mysql_fetch_row(qh->res);
qh->next = firstQuery;
firstQuery = qh;
sprintf(buf, "%d", mysql_num_fields(qh->res));
setVar("NUM_FIELDS", buf);
sprintf(buf, "%ld", mysql_num_rows(qh->res));
setVar("NUM_ROWS", buf);
}
void cmdFree(int argc, char *argv[]) {
qHandle *qh, *prev, phony = {"", NULL, NULL, NULL};
phony.next = firstQuery;
checkNumArgs(1,"free");
prev = &phony;
qh = firstQuery;
while (qh != NULL) {
if (!strcasecmp(argv[0], qh->name)) {
mysql_free_result(qh->res);
free(qh->name);
prev->next = qh->next;
free(qh);
qh = prev->next;
} else {
prev = qh;
qh = qh->next;
}
}
firstQuery = phony.next;
}
void cmdPrintRows(int argc, char *argv[]) {
qHandle *qh;
char *tmp;
checkNumArgs(2,"print_rows");
checkConn("print_rows");
qh = firstQuery;
while (qh != NULL) {
if (!strcmp(qh->name, argv[0])) break;
qh = qh->next;
}
if (qh == NULL) {
fprintf(yyout, "<p>print_rows: query handle %s not found</p>\n", argv[0]);
return;
}
while (qh->row) {
tmp = substVars(argv[1]);
fprintf(yyout, "%s", tmp);
free(tmp);
qh->row = mysql_fetch_row(qh->res);
}
}
void cmdFetch(int argc, char *argv[]) {
qHandle *qh;
checkNumArgs(1,"fetch");
checkConn("fetch");
qh = firstQuery;
while (qh != NULL) {
if (!strcmp(qh->name, argv[0])) break;
qh = qh->next;
}
if (qh == NULL) {
fprintf(yyout, "<p>fetch: query handle not found\n</p>");
return;
}
qh->row = mysql_fetch_row(qh->res);
}
void cmdSeek(int argc, char *argv[]) {
qHandle *qh;
checkNumArgs(2,"seek");
checkConn("seek");
qh = firstQuery;
while (qh != NULL) {
if (!strcmp(qh->name, argv[0])) break;
qh = qh->next;
}
if (qh == NULL) {
fprintf(yyout, "<p>seek: query handle not found</p>\n");
return;
}
mysql_data_seek(qh->res, atoi(argv[1]));
qh->row = mysql_fetch_row(qh->res);
}
#ifndef IS_NUM
/* some peoples mysql header files don't seem to define this... */
# define IS_NUM(t) ((t) <= FIELD_TYPE_INT24)
#endif
/* This command was contributed by Martin Maisey <M.J.Maisey@webname.com>
* (with slight modifications by me (James). */
void cmdQtable(int argc, char *argv[]) {
qHandle *qh;
unsigned int i;
checkNumArgs(1,"qtable");
checkConn("qtable");
qh = firstQuery;
while (qh != NULL) {
if (!strcmp(qh->name, argv[0])) break;
qh = qh->next;
}
if (qh == NULL) {
fprintf(yyout, "<p>qtable: query handle not found</p>\n");
return;
}
if (argc > 1 && !strcasecmp(argv[1], "borders"))
fprintf(yyout, "<table border>\n");
else
fprintf(yyout, "<table>\n");
/* Output field names */
fprintf(yyout, "<tr>");
for (i = 0; i < mysql_num_fields(qh->res); i++)
fprintf(yyout, "<th>%s</th> ", mysql_fetch_fields(qh->res)[i].name);
fprintf(yyout, "</tr>\n");
mysql_data_seek(qh->res, 0);
qh->row = mysql_fetch_row(qh->res);
/* Output rows */
while (qh->row) {
fprintf(yyout, "<tr>");
for (i = 0; i < mysql_num_fields(qh->res); i++)
if (IS_NUM(mysql_fetch_fields(qh->res)[i].type)) /*right align numbers*/
fprintf(yyout, "<td align=right>%s</td> ", qh->row[i]);
else
fprintf(yyout, "<td>%s</td> ", qh->row[i]);
fprintf(yyout, "</tr>\n");
qh->row = mysql_fetch_row(qh->res);
}
fprintf(yyout, "</table>\n");
}
/* This command was contributed by Martin Maisey <M.J.Maisey@webname.com> */
void cmdQlongform(int argc, char *argv[]) {
qHandle *qh;
unsigned int i;
checkNumArgs(1,"qlongform");
checkConn("qlongform");
qh = firstQuery;
while (qh != NULL) {
if (!strcmp(qh->name, argv[0])) break;
qh = qh->next;
}
if (qh == NULL) {
fprintf(yyout, "<p>qlongform: query handle not found</p>\n");
return;
}
/* Move to first row */
mysql_data_seek(qh->res, 0);
qh->row = mysql_fetch_row(qh->res);
/* Output rows */
while (qh->row) {
for (i = 0; i < mysql_num_fields(qh->res); i++)
fprintf(yyout, "<b>%s:</b> %s<br>\n",mysql_fetch_fields(qh->res)[i].name,
qh->row[i]);
fprintf(yyout, "<p>\n");
qh->row = mysql_fetch_row(qh->res);
}
}
/* print a <select> style list box from a query. For use in forms.
Requires that the first column contain values for the form variable,
and the second have labels for the list. <james@daa.com.au> */
void cmdQselect(int argc, char *argv[]) {
qHandle *qh;
int defaultGiven = 0;
char *default_v = NULL;
checkNumArgs(2,"qselect");
checkConn("qselect");
qh = firstQuery;
while (qh != NULL) {
if (!strcmp(qh->name, argv[0])) break;
qh = qh->next;
}
if (qh == NULL) {
fprintf(yyout, "<p>qselect: query handle not found</p>\n");
return;
}
if (mysql_num_fields(qh->res) < 2) {
fprintf(yyout, "<p>qselect: not enough fields in table</p>\n");
return;
}
if (argc >= 3) {
defaultGiven = 1;
default_v = argv[2];
}
mysql_data_seek(qh->res, 0);
qh->row = mysql_fetch_row(qh->res);
fprintf(yyout, "<select name=\"%s\">\n", argv[1]);
while (qh->row) {
if (defaultGiven && !strcmp(qh->row[0], default_v))
fprintf(yyout, "<option value=\"%s\" selected>%s\n", qh->row[0],
qh->row[1]);
else
fprintf(yyout, "<option value=\"%s\">%s\n", qh->row[0], qh->row[1]);
qh->row = mysql_fetch_row(qh->res);
}
fprintf(yyout, "</select>");
}
commands db_funcs = {
{"connect", cmdConnect},
{"close", cmdClose},
{"database", cmdDatabase},
{"query", cmdQuery},
{"free", cmdFree},
{"print_rows", cmdPrintRows},
{"fetch", cmdFetch},
{"seek", cmdSeek},
{"qtable", cmdQtable},
{"qlongform", cmdQlongform},
{"qselect", cmdQselect},
{NULL, NULL}
};
|