CMakeLua/Utilities/cmcurl-7.19.0/lib/sendf.c

   1 /***************************************************************************
   2  *                                  _   _ ____  _
   3  *  Project                     ___| | | |  _ \| |
   4  *                             / __| | | | |_) | |
   5  *                            | (__| |_| |  _ <| |___
   6  *                             \___|\___/|_| \_\_____|
   7  *
   8  * Copyright (C) 1998 - 2008, Daniel Stenberg, <daniel@haxx.se>, et al.
   9  *
  10  * This software is licensed as described in the file COPYING, which
  11  * you should have received as part of this distribution. The terms
  12  * are also available at http://curl.haxx.se/docs/copyright.html.
  13  *
  14  * You may opt to use, copy, modify, merge, publish, distribute and/or sell
  15  * copies of the Software, and permit persons to whom the Software is
  16  * furnished to do so, under the terms of the COPYING file.
  17  *
  18  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  19  * KIND, either express or implied.
  20  *
  21  * $Id: sendf.c,v 1.1.1.1 2008-09-23 16:32:05 hoffman Exp $
  22  ***************************************************************************/
  23
  24 #include "setup.h"
  25
  26 #include <stdio.h>
  27 #include <stdarg.h>
  28 #include <stdlib.h>
  29 #include <errno.h>
  30
  31 #ifdef HAVE_SYS_SOCKET_H
  32 #include <sys/socket.h> /* required for send() & recv() prototypes */
  33 #endif
  34
  35 #ifdef HAVE_UNISTD_H
  36 #include <unistd.h>
  37 #endif
  38
  39 #include <curl/curl.h>
  40 #include "urldata.h"
  41 #include "sendf.h"
  42 #include "connect.h"
  43 #include "sslgen.h"
  44 #include "ssh.h"
  45 #include "multiif.h"
  46
  47 #define _MPRINTF_REPLACE /* use the internal *printf() functions */
  48 #include <curl/mprintf.h>
  49
  50 #if defined(HAVE_KRB4) || defined(HAVE_GSSAPI)
  51 #include "krb4.h"
  52 #else
  53 #define Curl_sec_send(a,b,c,d) -1
  54 #define Curl_sec_read(a,b,c,d) -1
  55 #endif
  56
  57 #include <string.h>
  58 #include "memory.h"
  59 #include "strerror.h"
  60 #include "easyif.h" /* for the Curl_convert_from_network prototype */
  61 /* The last #include file should be: */
  62 #include "memdebug.h"
  63
  64 /* returns last node in linked list */
  65 static struct curl_slist *slist_get_last(struct curl_slist *list)
  66 {
  67   struct curl_slist     *item;
  68
  69   /* if caller passed us a NULL, return now */
  70   if(!list)
  71     return NULL;
  72
  73   /* loop through to find the last item */
  74   item = list;
  75   while(item->next) {
  76     item = item->next;
  77   }
  78   return item;
  79 }
  80
  81 /*
  82  * curl_slist_append() appends a string to the linked list. It always returns
  83  * the address of the first record, so that you can use this function as an
  84  * initialization function as well as an append function. If you find this
  85  * bothersome, then simply create a separate _init function and call it
  86  * appropriately from within the program.
  87  */
  88 struct curl_slist *curl_slist_append(struct curl_slist *list,
  89                                      const char *data)
  90 {
  91   struct curl_slist     *last;
  92   struct curl_slist     *new_item;
  93
  94   new_item = (struct curl_slist *) malloc(sizeof(struct curl_slist));
  95   if(new_item) {
  96     char *dupdata = strdup(data);
  97     if(dupdata) {
  98       new_item->next = NULL;
  99       new_item->data = dupdata;
 100     }
 101     else {
 102       free(new_item);
 103       return NULL;
 104     }
 105   }
 106   else
 107     return NULL;
 108
 109   if(list) {
 110     last = slist_get_last(list);
 111     last->next = new_item;
 112     return list;
 113   }
 114
 115   /* if this is the first item, then new_item *is* the list */
 116   return new_item;
 117 }
 118
 119 /* be nice and clean up resources */
 120 void curl_slist_free_all(struct curl_slist *list)
 121 {
 122   struct curl_slist     *next;
 123   struct curl_slist     *item;
 124
 125   if(!list)
 126     return;
 127
 128   item = list;
 129   do {
 130     next = item->next;
 131
 132     if(item->data) {
 133       free(item->data);
 134     }
 135     free(item);
 136     item = next;
 137   } while(next);
 138 }
 139
 140 #ifdef CURL_DO_LINEEND_CONV
 141 /*
 142  * convert_lineends() changes CRLF (\r\n) end-of-line markers to a single LF
 143  * (\n), with special processing for CRLF sequences that are split between two
 144  * blocks of data.  Remaining, bare CRs are changed to LFs.  The possibly new
 145  * size of the data is returned.
 146  */
 147 static size_t convert_lineends(struct SessionHandle *data,
 148                                char *startPtr, size_t size)
 149 {
 150   char *inPtr, *outPtr;
 151
 152   /* sanity check */
 153   if((startPtr == NULL) || (size < 1)) {
 154     return(size);
 155   }
 156
 157   if(data->state.prev_block_had_trailing_cr == TRUE) {
 158     /* The previous block of incoming data
 159        had a trailing CR, which was turned into a LF. */
 160     if(*startPtr == '\n') {
 161       /* This block of incoming data starts with the
 162          previous block's LF so get rid of it */
 163       memmove(startPtr, startPtr+1, size-1);
 164       size--;
 165       /* and it wasn't a bare CR but a CRLF conversion instead */
 166       data->state.crlf_conversions++;
 167     }
 168     data->state.prev_block_had_trailing_cr = FALSE; /* reset the flag */
 169   }
 170
 171   /* find 1st CR, if any */
 172   inPtr = outPtr = memchr(startPtr, '\r', size);
 173   if(inPtr) {
 174     /* at least one CR, now look for CRLF */
 175     while(inPtr < (startPtr+size-1)) {
 176       /* note that it's size-1, so we'll never look past the last byte */
 177       if(memcmp(inPtr, "\r\n", 2) == 0) {
 178         /* CRLF found, bump past the CR and copy the NL */
 179         inPtr++;
 180         *outPtr = *inPtr;
 181         /* keep track of how many CRLFs we converted */
 182         data->state.crlf_conversions++;
 183       }
 184       else {
 185         if(*inPtr == '\r') {
 186           /* lone CR, move LF instead */
 187           *outPtr = '\n';
 188         }
 189         else {
 190           /* not a CRLF nor a CR, just copy whatever it is */
 191           *outPtr = *inPtr;
 192         }
 193       }
 194       outPtr++;
 195       inPtr++;
 196     } /* end of while loop */
 197
 198     if(inPtr < startPtr+size) {
 199       /* handle last byte */
 200       if(*inPtr == '\r') {
 201         /* deal with a CR at the end of the buffer */
 202         *outPtr = '\n'; /* copy a NL instead */
 203         /* note that a CRLF might be split across two blocks */
 204         data->state.prev_block_had_trailing_cr = TRUE;
 205       }
 206       else {
 207         /* copy last byte */
 208         *outPtr = *inPtr;
 209       }
 210       outPtr++;
 211       inPtr++;
 212     }
 213     if(outPtr < startPtr+size) {
 214       /* tidy up by null terminating the now shorter data */
 215       *outPtr = '\0';
 216     }
 217     return(outPtr - startPtr);
 218   }
 219   return(size);
 220 }
 221 #endif /* CURL_DO_LINEEND_CONV */
 222
 223 /* Curl_infof() is for info message along the way */
 224
 225 void Curl_infof(struct SessionHandle *data, const char *fmt, ...)
 226 {
 227   if(data && data->set.verbose) {
 228     va_list ap;
 229     size_t len;
 230     char print_buffer[1024 + 1];
 231     va_start(ap, fmt);
 232     vsnprintf(print_buffer, 1024, fmt, ap);
 233     va_end(ap);
 234     len = strlen(print_buffer);
 235     Curl_debug(data, CURLINFO_TEXT, print_buffer, len, NULL);
 236   }
 237 }
 238
 239 /* Curl_failf() is for messages stating why we failed.
 240  * The message SHALL NOT include any LF or CR.
 241  */
 242
 243 void Curl_failf(struct SessionHandle *data, const char *fmt, ...)
 244 {
 245   va_list ap;
 246   size_t len;
 247   va_start(ap, fmt);
 248
 249   vsnprintf(data->state.buffer, BUFSIZE, fmt, ap);
 250
 251   if(data->set.errorbuffer && !data->state.errorbuf) {
 252     snprintf(data->set.errorbuffer, CURL_ERROR_SIZE, "%s", data->state.buffer);
 253     data->state.errorbuf = TRUE; /* wrote error string */
 254   }
 255   if(data->set.verbose) {
 256     len = strlen(data->state.buffer);
 257     if(len < BUFSIZE - 1) {
 258       data->state.buffer[len] = '\n';
 259       data->state.buffer[++len] = '\0';
 260     }
 261     Curl_debug(data, CURLINFO_TEXT, data->state.buffer, len, NULL);
 262   }
 263
 264   va_end(ap);
 265 }
 266
 267 /* Curl_sendf() sends formated data to the server */
 268 CURLcode Curl_sendf(curl_socket_t sockfd, struct connectdata *conn,
 269                     const char *fmt, ...)
 270 {
 271   struct SessionHandle *data = conn->data;
 272   ssize_t bytes_written;
 273   size_t write_len;
 274   CURLcode res = CURLE_OK;
 275   char *s;
 276   char *sptr;
 277   va_list ap;
 278   va_start(ap, fmt);
 279   s = vaprintf(fmt, ap); /* returns an allocated string */
 280   va_end(ap);
 281   if(!s)
 282     return CURLE_OUT_OF_MEMORY; /* failure */
 283
 284   bytes_written=0;
 285   write_len = strlen(s);
 286   sptr = s;
 287
 288   while(1) {
 289     /* Write the buffer to the socket */
 290     res = Curl_write(conn, sockfd, sptr, write_len, &bytes_written);
 291
 292     if(CURLE_OK != res)
 293       break;
 294
 295     if(data->set.verbose)
 296       Curl_debug(data, CURLINFO_DATA_OUT, sptr, (size_t)bytes_written, conn);
 297
 298     if((size_t)bytes_written != write_len) {
 299       /* if not all was written at once, we must advance the pointer, decrease
 300          the size left and try again! */
 301       write_len -= bytes_written;
 302       sptr += bytes_written;
 303     }
 304     else
 305       break;
 306   }
 307
 308   free(s); /* free the output string */
 309
 310   return res;
 311 }
 312
 313 static ssize_t send_plain(struct connectdata *conn,
 314                           int num,
 315                           const void *mem,
 316                           size_t len)
 317 {
 318   curl_socket_t sockfd = conn->sock[num];
 319   ssize_t bytes_written = swrite(sockfd, mem, len);
 320
 321   if(-1 == bytes_written) {
 322     int err = SOCKERRNO;
 323
 324     if(
 325 #ifdef WSAEWOULDBLOCK
 326       /* This is how Windows does it */
 327       (WSAEWOULDBLOCK == err)
 328 #else
 329       /* errno may be EWOULDBLOCK or on some systems EAGAIN when it returned
 330          due to its inability to send off data without blocking. We therefor
 331          treat both error codes the same here */
 332       (EWOULDBLOCK == err) || (EAGAIN == err) || (EINTR == err)
 333 #endif
 334       )
 335       /* this is just a case of EWOULDBLOCK */
 336       bytes_written=0;
 337     else
 338       failf(conn->data, "Send failure: %s",
 339             Curl_strerror(conn, err));
 340   }
 341   return bytes_written;
 342 }
 343
 344 /*
 345  * Curl_write() is an internal write function that sends data to the
 346  * server. Works with plain sockets, SCP, SSL or kerberos.
 347  */
 348 CURLcode Curl_write(struct connectdata *conn,
 349                     curl_socket_t sockfd,
 350                     const void *mem,
 351                     size_t len,
 352                     ssize_t *written)
 353 {
 354   ssize_t bytes_written;
 355   CURLcode retcode;
 356   int num = (sockfd == conn->sock[SECONDARYSOCKET]);
 357
 358   if(conn->ssl[num].state == ssl_connection_complete)
 359     bytes_written = Curl_ssl_send(conn, num, mem, len);
 360   else if(Curl_ssh_enabled(conn, PROT_SCP))
 361     bytes_written = Curl_scp_send(conn, num, mem, len);
 362   else if(Curl_ssh_enabled(conn, PROT_SFTP))
 363     bytes_written = Curl_sftp_send(conn, num, mem, len);
 364   else if(conn->sec_complete)
 365     bytes_written = Curl_sec_send(conn, num, mem, len);
 366   else
 367     bytes_written = send_plain(conn, num, mem, len);
 368
 369   *written = bytes_written;
 370   retcode = (-1 != bytes_written)?CURLE_OK:CURLE_SEND_ERROR;
 371
 372   return retcode;
 373 }
 374
 375 /*
 376  * Curl_write_plain() is an internal write function that sends data to the
 377  * server using plain sockets only. Otherwise meant to have the exact same
 378  * proto as Curl_write()
 379  */
 380 CURLcode Curl_write_plain(struct connectdata *conn,
 381                           curl_socket_t sockfd,
 382                           const void *mem,
 383                           size_t len,
 384                           ssize_t *written)
 385 {
 386   ssize_t bytes_written;
 387   CURLcode retcode;
 388   int num = (sockfd == conn->sock[SECONDARYSOCKET]);
 389
 390   bytes_written = send_plain(conn, num, mem, len);
 391
 392   *written = bytes_written;
 393   retcode = (-1 != bytes_written)?CURLE_OK:CURLE_SEND_ERROR;
 394
 395   return retcode;
 396 }
 397
 398 static CURLcode pausewrite(struct SessionHandle *data,
 399                            int type, /* what type of data */
 400                            char *ptr,
 401                            size_t len)
 402 {
 403   /* signalled to pause sending on this connection, but since we have data
 404      we want to send we need to dup it to save a copy for when the sending
 405      is again enabled */
 406   struct SingleRequest *k = &data->req;
 407   char *dupl = malloc(len);
 408   if(!dupl)
 409     return CURLE_OUT_OF_MEMORY;
 410
 411   memcpy(dupl, ptr, len);
 412
 413   /* store this information in the state struct for later use */
 414   data->state.tempwrite = dupl;
 415   data->state.tempwritesize = len;
 416   data->state.tempwritetype = type;
 417
 418   /* mark the connection as RECV paused */
 419   k->keepon |= KEEP_READ_PAUSE;
 420
 421   DEBUGF(infof(data, "Pausing with %d bytes in buffer for type %02x\n",
 422                (int)len, type));
 423
 424   return CURLE_OK;
 425 }
 426
 427
 428 /* client_write() sends data to the write callback(s)
 429
 430    The bit pattern defines to what "streams" to write to. Body and/or header.
 431    The defines are in sendf.h of course.
 432  */
 433 CURLcode Curl_client_write(struct connectdata *conn,
 434                            int type,
 435                            char *ptr,
 436                            size_t len)
 437 {
 438   struct SessionHandle *data = conn->data;
 439   size_t wrote;
 440
 441   /* If reading is actually paused, we're forced to append this chunk of data
 442      to the already held data, but only if it is the same type as otherwise it
 443      can't work and it'll return error instead. */
 444   if(data->req.keepon & KEEP_READ_PAUSE) {
 445     size_t newlen;
 446     char *newptr;
 447     if(type != data->state.tempwritetype)
 448       /* major internal confusion */
 449       return CURLE_RECV_ERROR;
 450
 451     /* figure out the new size of the data to save */
 452     newlen = len + data->state.tempwritesize;
 453     /* allocate the new memory area */
 454     newptr = malloc(newlen);
 455     if(!newptr)
 456       return CURLE_OUT_OF_MEMORY;
 457     /* copy the previously held data to the new area */
 458     memcpy(newptr, data->state.tempwrite, data->state.tempwritesize);
 459     /* copy the new data to the end of the new area */
 460     memcpy(newptr + data->state.tempwritesize, ptr, len);
 461     /* free the old data */
 462     free(data->state.tempwrite);
 463     /* update the pointer and the size */
 464     data->state.tempwrite = newptr;
 465     data->state.tempwritesize = newlen;
 466
 467     return CURLE_OK;
 468   }
 469
 470   if(0 == len)
 471     len = strlen(ptr);
 472
 473   if(type & CLIENTWRITE_BODY) {
 474     if((conn->protocol&PROT_FTP) && conn->proto.ftpc.transfertype == 'A') {
 475 #ifdef CURL_DOES_CONVERSIONS
 476       /* convert from the network encoding */
 477       size_t rc;
 478       rc = Curl_convert_from_network(data, ptr, len);
 479       /* Curl_convert_from_network calls failf if unsuccessful */
 480       if(rc != CURLE_OK)
 481         return rc;
 482 #endif /* CURL_DOES_CONVERSIONS */
 483
 484 #ifdef CURL_DO_LINEEND_CONV
 485       /* convert end-of-line markers */
 486       len = convert_lineends(data, ptr, len);
 487 #endif /* CURL_DO_LINEEND_CONV */
 488     }
 489     /* If the previous block of data ended with CR and this block of data is
 490        just a NL, then the length might be zero */
 491     if(len) {
 492       wrote = data->set.fwrite_func(ptr, 1, len, data->set.out);
 493     }
 494     else {
 495       wrote = len;
 496     }
 497
 498     if(CURL_WRITEFUNC_PAUSE == wrote)
 499       return pausewrite(data, type, ptr, len);
 500
 501     if(wrote != len) {
 502       failf(data, "Failed writing body (%d != %d)", (int)wrote, (int)len);
 503       return CURLE_WRITE_ERROR;
 504     }
 505   }
 506
 507   if((type & CLIENTWRITE_HEADER) &&
 508      (data->set.fwrite_header || data->set.writeheader) ) {
 509     /*
 510      * Write headers to the same callback or to the especially setup
 511      * header callback function (added after version 7.7.1).
 512      */
 513     curl_write_callback writeit=
 514       data->set.fwrite_header?data->set.fwrite_header:data->set.fwrite_func;
 515
 516     /* Note: The header is in the host encoding
 517        regardless of the ftp transfer mode (ASCII/Image) */
 518
 519     wrote = writeit(ptr, 1, len, data->set.writeheader);
 520     if(CURL_WRITEFUNC_PAUSE == wrote)
 521       /* here we pass in the HEADER bit only since if this was body as well
 522          then it was passed already and clearly that didn't trigger the pause,
 523          so this is saved for later with the HEADER bit only */
 524       return pausewrite(data, CLIENTWRITE_HEADER, ptr, len);
 525
 526     if(wrote != len) {
 527       failf (data, "Failed writing header");
 528       return CURLE_WRITE_ERROR;
 529     }
 530   }
 531
 532   return CURLE_OK;
 533 }
 534
 535 #ifndef MIN
 536 #define MIN(a,b) ((a) < (b) ? (a) : (b))
 537 #endif
 538
 539 /*
 540  * Internal read-from-socket function. This is meant to deal with plain
 541  * sockets, SSL sockets and kerberos sockets.
 542  *
 543  * If the read would block (EWOULDBLOCK) we return -1. Otherwise we return
 544  * a regular CURLcode value.
 545  */
 546 int Curl_read(struct connectdata *conn, /* connection data */
 547               curl_socket_t sockfd,     /* read from this socket */
 548               char *buf,                /* store read data here */
 549               size_t sizerequested,     /* max amount to read */
 550               ssize_t *n)               /* amount bytes read */
 551 {
 552   ssize_t nread = 0;
 553   size_t bytesfromsocket = 0;
 554   char *buffertofill = NULL;
 555   bool pipelining = (bool)(conn->data->multi &&
 556                      Curl_multi_canPipeline(conn->data->multi));
 557
 558   /* Set 'num' to 0 or 1, depending on which socket that has been sent here.
 559      If it is the second socket, we set num to 1. Otherwise to 0. This lets
 560      us use the correct ssl handle. */
 561   int num = (sockfd == conn->sock[SECONDARYSOCKET]);
 562
 563   *n=0; /* reset amount to zero */
 564
 565   /* If session can pipeline, check connection buffer  */
 566   if(pipelining) {
 567     size_t bytestocopy = MIN(conn->buf_len - conn->read_pos, sizerequested);
 568
 569     /* Copy from our master buffer first if we have some unread data there*/
 570     if(bytestocopy > 0) {
 571       memcpy(buf, conn->master_buffer + conn->read_pos, bytestocopy);
 572       conn->read_pos += bytestocopy;
 573       conn->bits.stream_was_rewound = FALSE;
 574
 575       *n = (ssize_t)bytestocopy;
 576       return CURLE_OK;
 577     }
 578     /* If we come here, it means that there is no data to read from the buffer,
 579      * so we read from the socket */
 580     bytesfromsocket = MIN(sizerequested, BUFSIZE * sizeof (char));
 581     buffertofill = conn->master_buffer;
 582   }
 583   else {
 584     bytesfromsocket = MIN((long)sizerequested, conn->data->set.buffer_size ?
 585                           conn->data->set.buffer_size : BUFSIZE);
 586     buffertofill = buf;
 587   }
 588
 589   if(conn->ssl[num].state == ssl_connection_complete) {
 590     nread = Curl_ssl_recv(conn, num, buffertofill, bytesfromsocket);
 591
 592     if(nread == -1) {
 593       return -1; /* -1 from Curl_ssl_recv() means EWOULDBLOCK */
 594     }
 595   }
 596   else if(Curl_ssh_enabled(conn, (PROT_SCP|PROT_SFTP))) {
 597     if(conn->protocol & PROT_SCP)
 598       nread = Curl_scp_recv(conn, num, buffertofill, bytesfromsocket);
 599     else if(conn->protocol & PROT_SFTP)
 600       nread = Curl_sftp_recv(conn, num, buffertofill, bytesfromsocket);
 601 #ifdef LIBSSH2CHANNEL_EAGAIN
 602     if((nread == LIBSSH2CHANNEL_EAGAIN) || (nread == 0))
 603       /* EWOULDBLOCK */
 604       return -1;
 605 #endif
 606     if(nread < 0)
 607       /* since it is negative and not EGAIN, it was a protocol-layer error */
 608       return CURLE_RECV_ERROR;
 609   }
 610   else {
 611     if(conn->sec_complete)
 612       nread = Curl_sec_read(conn, sockfd, buffertofill,
 613                             bytesfromsocket);
 614     else
 615       nread = sread(sockfd, buffertofill, bytesfromsocket);
 616
 617     if(-1 == nread) {
 618       int err = SOCKERRNO;
 619 #ifdef USE_WINSOCK
 620       if(WSAEWOULDBLOCK == err)
 621 #else
 622       if((EWOULDBLOCK == err) || (EAGAIN == err) || (EINTR == err))
 623 #endif
 624         return -1;
 625     }
 626   }
 627
 628   if(nread >= 0) {
 629     if(pipelining) {
 630       memcpy(buf, conn->master_buffer, nread);
 631       conn->buf_len = nread;
 632       conn->read_pos = nread;
 633     }
 634
 635     *n += nread;
 636   }
 637
 638   return CURLE_OK;
 639 }
 640
 641 /* return 0 on success */
 642 static int showit(struct SessionHandle *data, curl_infotype type,
 643                   char *ptr, size_t size)
 644 {
 645   static const char * const s_infotype[CURLINFO_END] = {
 646     "* ", "< ", "> ", "{ ", "} ", "{ ", "} " };
 647
 648 #ifdef CURL_DOES_CONVERSIONS
 649   char buf[BUFSIZE+1];
 650   size_t conv_size = 0;
 651
 652   switch(type) {
 653   case CURLINFO_HEADER_OUT:
 654     /* assume output headers are ASCII */
 655     /* copy the data into my buffer so the original is unchanged */
 656     if(size > BUFSIZE) {
 657       size = BUFSIZE; /* truncate if necessary */
 658       buf[BUFSIZE] = '\0';
 659     }
 660     conv_size = size;
 661     memcpy(buf, ptr, size);
 662     /* Special processing is needed for this block if it
 663      * contains both headers and data (separated by CRLFCRLF).
 664      * We want to convert just the headers, leaving the data as-is.
 665      */
 666     if(size > 4) {
 667       size_t i;
 668       for(i = 0; i < size-4; i++) {
 669         if(memcmp(&buf[i], "\x0d\x0a\x0d\x0a", 4) == 0) {
 670           /* convert everthing through this CRLFCRLF but no further */
 671           conv_size = i + 4;
 672           break;
 673         }
 674       }
 675     }
 676
 677     Curl_convert_from_network(data, buf, conv_size);
 678     /* Curl_convert_from_network calls failf if unsuccessful */
 679     /* we might as well continue even if it fails...   */
 680     ptr = buf; /* switch pointer to use my buffer instead */
 681     break;
 682   default:
 683     /* leave everything else as-is */
 684     break;
 685   }
 686 #endif /* CURL_DOES_CONVERSIONS */
 687
 688   if(data->set.fdebug)
 689     return (*data->set.fdebug)(data, type, ptr, size,
 690                                data->set.debugdata);
 691
 692   switch(type) {
 693   case CURLINFO_TEXT:
 694   case CURLINFO_HEADER_OUT:
 695   case CURLINFO_HEADER_IN:
 696     fwrite(s_infotype[type], 2, 1, data->set.err);
 697     fwrite(ptr, size, 1, data->set.err);
 698 #ifdef CURL_DOES_CONVERSIONS
 699     if(size != conv_size) {
 700       /* we had untranslated data so we need an explicit newline */
 701       fwrite("\n", 1, 1, data->set.err);
 702     }
 703 #endif
 704     break;
 705   default: /* nada */
 706     break;
 707   }
 708   return 0;
 709 }
 710
 711 int Curl_debug(struct SessionHandle *data, curl_infotype type,
 712                char *ptr, size_t size,
 713                struct connectdata *conn)
 714 {
 715   int rc;
 716   if(data->set.printhost && conn && conn->host.dispname) {
 717     char buffer[160];
 718     const char *t=NULL;
 719     const char *w="Data";
 720     switch (type) {
 721     case CURLINFO_HEADER_IN:
 722       w = "Header";
 723     case CURLINFO_DATA_IN:
 724       t = "from";
 725       break;
 726     case CURLINFO_HEADER_OUT:
 727       w = "Header";
 728     case CURLINFO_DATA_OUT:
 729       t = "to";
 730       break;
 731     default:
 732       break;
 733     }
 734
 735     if(t) {
 736       snprintf(buffer, sizeof(buffer), "[%s %s %s]", w, t,
 737                conn->host.dispname);
 738       rc = showit(data, CURLINFO_TEXT, buffer, strlen(buffer));
 739       if(rc)
 740         return rc;
 741     }
 742   }
 743   rc = showit(data, type, ptr, size);
 744   return rc;
 745 }