Annotation of libwww/Library/src/HTDialog.c, revision 2.23
2.1 frystyk 1: /* HTDialog.c
2: ** MESSAGES AND DIALOGS
3: **
4: ** (c) COPYRIGHT MIT 1995.
5: ** Please first read the full copyright statement in the file COPYRIGH.
2.23 ! frystyk 6: ** @(#) $Id: HTDialog.c,v 2.22 1996/08/19 18:30:21 frystyk Exp $
2.1 frystyk 7: **
8: ** This module provides a default implementation of the application part
9: ** of the Message and Dialog part or the Library. You do not have to do
10: ** it like this - you can use exactly the model for mapping codes into
11: ** messages as you like
12: **
13: ** Authors
14: ** HFN Henrik Frystyk
15: */
16:
17: /* Library include files */
18: #include "WWWLib.h"
19: #include "WWWApp.h"
2.6 frystyk 20: #include "WWWHTTP.h"
2.1 frystyk 21: #include "HTDialog.h" /* Implemented here */
22:
23: /*
24: ** Dialog Messages
25: */
2.18 frystyk 26: PRIVATE const char * HTDialogs[HT_MSG_ELEMENTS] = {
2.1 frystyk 27: "Please enter username:",
2.20 frystyk 28: "Please enter username for proxy authentication:",
2.21 frystyk 29: "Please enter username for this FTP server:",
2.1 frystyk 30: "Password:",
31: "Please give name of file to save in:",
32: "Plase enter account:",
2.19 frystyk 33: "You might not be allowed to use this method here, continue?",
2.1 frystyk 34: "Location has moved, continue?",
2.17 frystyk 35: "A new set of rules is to be added to your setup - continue?",
36: "This file already exists - replace existing file?",
2.18 frystyk 37: "Authentication failed - retry?",
2.19 frystyk 38: "Proxy authentication failed - retry?",
2.18 frystyk 39: "This method has already been performed - repeat operation?",
40: "This document is very big - continue operation?",
41: "The source document for this operation has moved - continue operation with new location?",
42: "The destination document for this operation has moved - continue operation with new location?",
2.19 frystyk 43: "A redirection may change the behavior of this method - proceed anyway?"
2.1 frystyk 44: };
45:
46: /*
47: ** All errors that are not strictly HTTP errors but originates from, e.g.,
48: ** the FTP protocol all have element numbers > HTERR_HTTP_CODES_END, i.e.,
49: ** they should be placed after the blank line
50: */
51: typedef struct _HTErrorMessage {
52: int code; /* Error number */
53: char * msg; /* Short explanation */
54: char * url; /* Explaning URL */
55: } HTErrorMessage;
56:
57: PRIVATE HTErrorMessage HTErrors[HTERR_ELEMENTS] = {
58:
59: /* CODE ERROR MESSAGE ERROR URL */
60:
2.15 frystyk 61: { 100, "Continue", "information" },
62: { 101, "Switching Protocols", "information" },
63: { 200, "OK", "success" },
64: { 201, "Created", "success" },
65: { 202, "Accepted", "success" },
66: { 203, "Non-authoritative Information", "success" },
67: { 204, "No Content", "success" },
68: { 205, "Reset Content", "success" },
69: { 206, "Partial Content", "success" },
70: { 300, "Multiple Choices", "redirection" },
71: { 301, "Moved Permanently", "redirection" },
72: { 302, "Moved Temporarily", "redirection" },
73: { 303, "See Other", "redirection" },
74: { 304, "Not Modified", "redirection" },
75: { 305, "Use Proxy", "redirection" },
76: { 400, "Bad Request", "client_error" },
77: { 401, "Unauthorized", "client_error" },
78: { 402, "Payment Required", "client_error" },
79: { 403, "Forbidden", "client_error" },
80: { 404, "Not Found", "client_error" },
81: { 405, "Method Not Allowed", "client_error" },
82: { 406, "Not Acceptable", "client_error" },
83: { 407, "Proxy Authentication Required", "client_error" },
84: { 408, "Request Timeout", "client_error" },
85: { 409, "Conflict", "client_error" },
86: { 410, "Gone", "client_error" },
87: { 411, "Length Required", "client_error" },
88: { 412, "Precondition Failed", "client_error" },
89: { 413, "Request Entity Too Large", "client_error" },
90: { 414, "Request-URI Too Large", "client_error" },
91: { 415, "Unsupported Media Type", "client_error" },
92: { 500, "Internal Server Error", "server_error" },
93: { 501, "Not Implemented", "server_error" },
94: { 502, "Bad Gateway", "server_error" },
95: { 503, "Service Unavailable", "server_error" },
96: { 504, "Gateway Timeout", "server_error" },
97: { 505, "HTTP Version not supported", "server_error" },
98:
99: /* Cache Warnings */
100: { 10, "Response is Stale", "cache" },
101: { 11, "Revalidation Failed", "cache" },
102: { 12, "Disconnected Opeartion", "cache" },
103: { 13, "Heuristic Expiration", "cache" },
104: { 14, "Transformation Applied", "cache" },
105: { 99, "Cache warning", "cache" },
106:
107: /* Non-HTTP Error codes and warnings */
108: { 0, "Can't locate remote host", "internal" },
109: { 0, "No host name found", "internal" },
110: { 0, "No file name found or file not accessible", "internal" },
111: { 0, "FTP-server replies", "internal" },
112: { 0, "FTP-server doesn't reply", "internal" },
113: { 0, "Server timed out", "internal" },
114: { 0, "Gopher-server replies", "internal" },
115: { 0, "Data transfer interrupted", "internal" },
116: { 0, "Connection establishment interrupted", "internal" },
117: { 0, "CSO-server replies", "internal" },
118: { 0, "This is probably a HTTP server 0.9 or less","internal" },
119: { 0, "Bad, Incomplete, or Unknown Response", "internal" },
120: { 0, "Unknown access authentication scheme", "internal" },
121: { 0, "News-server replies", "internal" },
122: { 0, "Trying `ftp://' instead of `file://'", "internal" },
123: { 0, "Too many redirections", "internal" },
2.16 frystyk 124: { 0, "Method not suited for automatic redirection","internal" },
2.15 frystyk 125: { 0, "Premature End Of File", "internal" },
126: { 0, "Response from WAIS Server too Large - Extra lines ignored","internal"},
127: { 0, "WAIS-server doesn't return any data", "internal" },
128: { 0, "Can't connect to WAIS-server", "internal" },
129: { 0, "System replies", "internal" },
130: { 0, "Wrong or unknown access scheme", "internal" },
131: { 0, "Access scheme not allowed in this context", "internal" },
2.23 ! frystyk 132: { 0, "When you are connected, you can log in", "internal" },
! 133: { 0, "This version has expired and will be automatically reloaded", "internal" }
2.1 frystyk 134: };
135:
136: /* ------------------------------------------------------------------------- */
137:
138: PUBLIC BOOL HTProgress (HTRequest * request, HTAlertOpcode op,
2.10 frystyk 139: int msgnum, const char * dfault, void * input,
2.1 frystyk 140: HTAlertPar * reply)
141: {
2.19 frystyk 142: if (!request || HTRequest_internal(request)) return NO;
2.1 frystyk 143: switch (op) {
144: case HT_PROG_DNS:
2.9 frystyk 145: HTTrace("Looking up %s\n", input ? (char *) input : "");
2.1 frystyk 146: break;
147:
148: case HT_PROG_CONNECT:
2.9 frystyk 149: HTTrace("Contacting %s\n", input ? (char *) input : "");
2.1 frystyk 150: break;
151:
152: case HT_PROG_ACCEPT:
2.8 eric 153: HTTrace("Waiting for connection...\n");
2.1 frystyk 154: break;
155:
156: case HT_PROG_READ:
157: {
158: long cl = HTAnchor_length(HTRequest_anchor(request));
159: if (cl > 0) {
160: long b_read = HTRequest_bytesRead(request);
161: double pro = (double) b_read/cl*100;
162: char buf[10];
163: HTNumToStr((unsigned long) cl, buf, 10);
2.8 eric 164: HTTrace("Read (%d%% of %s)\n", (int) pro, buf);
2.1 frystyk 165: } else
2.8 eric 166: HTTrace("Reading...\n");
2.1 frystyk 167: }
168: break;
169:
170: case HT_PROG_WRITE:
2.4 frystyk 171: if (HTRequest_isPostWeb(request)) {
172: HTParentAnchor *anchor=HTRequest_anchor(HTRequest_source(request));
173: long cl = HTAnchor_length(anchor);
174: if (cl > 0) {
175: long b_write = HTRequest_bytesWritten(request);
176: double pro = (double) b_write/cl*100;
177: char buf[10];
178: HTNumToStr((unsigned long) cl, buf, 10);
2.8 eric 179: HTTrace("Written (%d%% of %s)\n", (int) pro, buf);
2.4 frystyk 180: } else
2.8 eric 181: HTTrace("Writing...\n");
2.4 frystyk 182: }
2.1 frystyk 183: break;
184:
185: case HT_PROG_DONE:
2.22 frystyk 186: HTTrace("Connection closed\n");
2.1 frystyk 187: break;
188:
189: case HT_PROG_WAIT:
2.12 frystyk 190: HTTrace("Waiting for free socket...\n");
2.1 frystyk 191: break;
192:
193: default:
2.8 eric 194: HTTrace("UNKNOWN PROGRESS STATE\n");
2.1 frystyk 195: break;
196: }
197: return YES;
198: }
199:
200: PUBLIC BOOL HTConfirm (HTRequest * request, HTAlertOpcode op,
2.10 frystyk 201: int msgnum, const char * dfault, void * input,
2.1 frystyk 202: HTAlertPar * reply)
203: {
204: char response[4]; /* One more for terminating NULL -- AL */
2.8 eric 205: HTTrace("%s", HTDialogs[msgnum]);
206: if (input) HTTrace(" (%s)", (char *) input);
207: HTTrace(" (y/n) ");
2.1 frystyk 208: #ifndef NO_STDIO
2.2 frystyk 209: if (fgets(response, 4, stdin)) /* get reply, max 3 chars */
2.1 frystyk 210: #endif
2.2 frystyk 211: {
2.1 frystyk 212: char *ptr = response;
213: while (*ptr) {
214: if (*ptr == '\n') {
215: *ptr = '\0';
216: break;
217: }
218: *ptr = TOUPPER(*ptr);
219: ptr++;
220: }
221: return (!strcmp(response, "YES") || !strcmp(response, "Y")) ? YES : NO;
222: }
223: return NO;
224: }
225:
226: /* Prompt for answer and get text back. Reply text is either NULL on
2.10 frystyk 227: ** error or a dynamic string which the caller must HT_FREE.
2.1 frystyk 228: */
229: PUBLIC BOOL HTPrompt (HTRequest * request, HTAlertOpcode op,
2.10 frystyk 230: int msgnum, const char * dfault, void * input,
2.1 frystyk 231: HTAlertPar * reply)
232: {
2.8 eric 233: HTTrace("%s ", HTDialogs[msgnum]);
234: if (input) HTTrace(" (%s) ", (char *) input);
235: if (dfault) HTTrace("(RETURN for [%s]) ", (char *) dfault);
2.1 frystyk 236: if (reply && msgnum>=0) {
237: #ifndef NO_STDIO
2.5 frystyk 238: char buffer[200];
2.1 frystyk 239: if (!fgets(buffer, 200, stdin)) return NO;
240: buffer[strlen(buffer)-1] = '\0'; /* Overwrite newline */
241: if (*buffer)
242: HTAlert_setReplyMessage(reply, buffer);
243: else if (dfault)
244: HTAlert_setReplyMessage(reply, (char *) dfault);
245: else
246: return NO;
247: return YES;
248: #endif
249: }
250: return NO;
251: }
252:
253: /* Prompt for password without echoing the reply. Reply text is
2.10 frystyk 254: ** either NULL on error or a dynamic string which the caller must HT_FREE.
2.1 frystyk 255: */
256: PUBLIC BOOL HTPromptPassword (HTRequest * request, HTAlertOpcode op,
2.10 frystyk 257: int msgnum, const char * dfault, void * input,
2.1 frystyk 258: HTAlertPar * reply)
259: {
260: if (reply && msgnum>=0) {
2.10 frystyk 261: #ifdef HAVE_GETPASS
2.1 frystyk 262: char * pw = (char *) getpass(HTDialogs[msgnum]);
2.2 frystyk 263: if (pw) HTAlert_setReplySecret(reply, pw);
2.1 frystyk 264: return YES;
2.10 frystyk 265: #else
2.11 eric 266: return NO; /* needed for WWW_MSWINDOWS */
2.10 frystyk 267: #endif /* HAVE_GETPASS */
2.1 frystyk 268: }
269: return NO;
270: }
271:
272: /* Username and password
273: ** ---------------------
274: ** Prompt Username and password as an atomic operation
275: */
276: PUBLIC BOOL HTPromptUsernameAndPassword (HTRequest * request, HTAlertOpcode op,
2.10 frystyk 277: int msgnum, const char * dfault,
2.1 frystyk 278: void * input, HTAlertPar * reply)
279: {
2.21 frystyk 280: BOOL status = HTPrompt(request, op, msgnum, dfault, input, reply);
2.1 frystyk 281: return status ?
282: HTPromptPassword(request, op, HT_MSG_PW, dfault, input, reply) : NO;
283: }
284:
285: /* HTError_print
286: ** -------------
287: ** Default function that creates an error message using HTAlert() to
288: ** put out the contents of the error_stack messages. Furthermore, the
289: ** error_info structure contains a name of a help file that might be put
290: ** up as a link. This file can then be multi-linguistic.
291: */
292: PUBLIC BOOL HTError_print (HTRequest * request, HTAlertOpcode op,
2.10 frystyk 293: int msgnum, const char * dfault, void * input,
2.1 frystyk 294: HTAlertPar * reply)
295: {
296: HTList *cur = (HTList *) input;
297: HTError *pres;
298: HTErrorShow showmask = HTError_show();
299: HTChunk *msg = NULL;
300: int code;
2.8 eric 301: if (WWWTRACE) HTTrace("HTError..... Generating message\n");
2.1 frystyk 302: if (!request || !cur) return NO;
303: while ((pres = (HTError *) HTList_nextObject(cur))) {
304: int index = HTError_index(pres);
305: if (HTError_doShow(pres)) {
306: if (!msg) {
307: HTSeverity severity = HTError_severity(pres);
2.3 frystyk 308: msg = HTChunk_new(128);
2.1 frystyk 309: if (severity == ERR_WARN)
2.3 frystyk 310: HTChunk_puts(msg, "Warning: ");
2.1 frystyk 311: else if (severity == ERR_NON_FATAL)
2.3 frystyk 312: HTChunk_puts(msg, "Non Fatal Error: ");
2.1 frystyk 313: else if (severity == ERR_FATAL)
2.3 frystyk 314: HTChunk_puts(msg, "Fatal Error: ");
2.1 frystyk 315: else if (severity == ERR_INFO)
2.3 frystyk 316: HTChunk_puts(msg, "Information: ");
2.1 frystyk 317: else {
318: if (WWWTRACE)
2.8 eric 319: HTTrace("HTError..... Unknown Classification of Error (%d)...\n", severity);
2.3 frystyk 320: HTChunk_delete(msg);
2.1 frystyk 321: return NO;
322: }
323:
324: /* Error number */
325: if ((code = HTErrors[index].code) > 0) {
326: char buf[10];
327: sprintf(buf, "%d ", code);
2.3 frystyk 328: HTChunk_puts(msg, buf);
2.1 frystyk 329: }
330: } else
2.3 frystyk 331: HTChunk_puts(msg, "\nReason: ");
332: HTChunk_puts(msg, HTErrors[index].msg); /* Error message */
2.1 frystyk 333:
334: if (showmask & HT_ERR_SHOW_PARS) { /* Error parameters */
335: int length;
336: int cnt;
337: char *pars = (char *) HTError_parameter(pres, &length);
338: if (length && pars) {
2.3 frystyk 339: HTChunk_puts(msg, " (");
2.1 frystyk 340: for (cnt=0; cnt<length; cnt++) {
341: char ch = *(pars+cnt);
342: if (ch < 0x20 || ch >= 0x7F)
2.3 frystyk 343: HTChunk_putc(msg, '#');
2.1 frystyk 344: else
2.3 frystyk 345: HTChunk_putc(msg, ch);
2.1 frystyk 346: }
2.3 frystyk 347: HTChunk_puts(msg, ") ");
2.1 frystyk 348: }
349: }
350:
351: if (showmask & HT_ERR_SHOW_LOCATION) { /* Error Location */
2.3 frystyk 352: HTChunk_puts(msg, "This occured in ");
353: HTChunk_puts(msg, HTError_location(pres));
354: HTChunk_putc(msg, '\n');
2.1 frystyk 355: }
356:
357: /*
358: ** Make sure that we don't get this error more than once even
359: ** if we are keeping the error stack from one request to another
360: */
361: HTError_setIgnore(pres);
362:
363: /* If we only are show the most recent entry then break here */
364: if (showmask & HT_ERR_SHOW_FIRST)
365: break;
366: }
367: }
368: if (msg) {
2.3 frystyk 369: HTChunk_putc(msg, '\n');
2.8 eric 370: HTTrace("WARNING: %s\n", HTChunk_data(msg));
2.3 frystyk 371: HTChunk_delete(msg);
2.1 frystyk 372: }
373: return YES;
374: }
375:
2.6 frystyk 376: /* HTError_response
377: ** ----------------
378: ** Default function that creates an error message using HTAlert() to
379: ** put out the contents of the error_stack messages. Furthermore, the
380: ** error_info structure contains a name of a help file that might be put
381: ** up as a link. This file can then be multi-linguistic.
382: */
383: PUBLIC BOOL HTError_response (HTRequest * request, HTAlertOpcode op,
2.10 frystyk 384: int msgnum, const char * dfault, void * input,
2.6 frystyk 385: HTAlertPar * reply)
386: {
387: HTList * cur = (HTList *) input;
388: HTError * pres;
389: HTErrorShow showmask = HTError_show();
390: HTChunk * msg = NULL;
391: int code;
2.8 eric 392: if (WWWTRACE) HTTrace("HTError..... Generating HTTP response\n");
2.6 frystyk 393: if (!request || !cur || !reply) return NO;
394: while ((pres = (HTError *) HTList_nextObject(cur))) {
395: int index = HTError_index(pres);
396: if (HTError_doShow(pres)) {
397: if (!msg) {
398: msg = HTChunk_new(128);
399: if ((code = HTErrors[index].code) > 0) {
400: char * reason = HTErrors[index].msg;
2.7 frystyk 401: char * buf;
402: if ((buf = (char *) HT_MALLOC(20 + strlen(reason))) == NULL)
403: HT_OUTOFMEM("HTError_response");
2.6 frystyk 404: sprintf(buf,"%s %d %s%c%c",HTTP_VERSION,code,reason,CR,LF);
405: HTAlert_assignReplyMessage(reply, buf);
406: }
407: } else {
408: HTChunk_puts(msg, "\nReason: ");
409: HTChunk_puts(msg, HTErrors[index].msg); /* Error message */
410: }
411:
412: if (showmask & HT_ERR_SHOW_PARS) { /* Error parameters */
413: int length;
414: int cnt;
415: char *pars = (char *) HTError_parameter(pres, &length);
416: if (length && pars) {
417: HTChunk_puts(msg, " (");
418: for (cnt=0; cnt<length; cnt++) {
419: char ch = *(pars+cnt);
420: if (ch < 0x20 || ch >= 0x7F)
421: HTChunk_putc(msg, '#');
422: else
423: HTChunk_putc(msg, ch);
424: }
425: HTChunk_puts(msg, ") ");
426: }
427: }
428:
429: if (showmask & HT_ERR_SHOW_LOCATION) { /* Error Location */
430: HTChunk_puts(msg, "This occured in ");
431: HTChunk_puts(msg, HTError_location(pres));
432: HTChunk_putc(msg, '\n');
433: }
434:
435: /*
436: ** Make sure that we don't get this error more than once even
437: ** if we are keeping the error stack from one request to another
438: */
439: HTError_setIgnore(pres);
440:
441: /* If we only are show the most recent entry then break here */
442: if (showmask & HT_ERR_SHOW_FIRST)
443: break;
444: }
445: }
446: if (msg) {
447: HTChunk_putc(msg, '\n');
448: #if 0
2.8 eric 449: HTTrace("WARNING: %s\n", HTChunk_data(msg));
2.6 frystyk 450: #endif
451: HTChunk_delete(msg);
452: }
453: return YES;
454: }
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