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citadel  8.12
Functions
file_ops.c File Reference
#include "sysdep.h"
#include <stdlib.h>
#include <unistd.h>
#include <stdio.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <errno.h>
#include <ctype.h>
#include <string.h>
#include <sys/mman.h>
#include <time.h>
#include <limits.h>
#include <libcitadel.h>
#include "citadel.h"
#include "server.h"
#include "config.h"
#include "file_ops.h"
#include "sysdep_decls.h"
#include "support.h"
#include "room_ops.h"
#include "msgbase.h"
#include "citserver.h"
#include "threads.h"
#include "snprintf.h"
#include "ctdl_module.h"
#include "user_ops.h"

Go to the source code of this file.

Functions

void cmd_delf (char *filename)
void cmd_movf (char *cmdbuf)
void OpenCmdResult (char *filename, const char *mime_type)
void cmd_open (char *cmdbuf)
void cmd_oimg (char *cmdbuf)
void cmd_uopn (char *cmdbuf)
void cmd_uimg (char *cmdbuf)
void cmd_clos (char *cmdbuf)
void abort_upl (CitContext *who)
void cmd_ucls (char *cmd)
void cmd_read (char *cmdbuf)
void cmd_writ (char *cmdbuf)
void cmd_ndop (char *cmdbuf)
void cmd_nuop (char *cmdbuf)
 CTDL_MODULE_INIT (file_ops)

Function Documentation

void abort_upl ( CitContext who)

Definition at line 498 of file file_ops.c.

{
       if (who->upload_fp != NULL) {
              fclose(who->upload_fp);
              who->upload_fp = NULL;
              unlink(CC->upl_path);
       }
}

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void cmd_clos ( char *  cmdbuf)

Definition at line 469 of file file_ops.c.

{
       char buf[256];

       if (CC->download_fp == NULL) {
              cprintf("%d You don't have a download file open.\n",
                     ERROR + RESOURCE_NOT_OPEN);
              return;
       }

       fclose(CC->download_fp);
       CC->download_fp = NULL;

       if (CC->dl_is_net == 1) {
              CC->dl_is_net = 0;
              snprintf(buf, sizeof buf, 
                             "%s/%s",
                             ctdl_netout_dir,
                             CC->net_node);
              unlink(buf);
       }

       cprintf("%d Ok\n", CIT_OK);
}

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void cmd_delf ( char *  filename)

Definition at line 53 of file file_ops.c.

{
       char pathname[64];
       int a;

       if (CtdlAccessCheck(ac_room_aide))
              return;

       if ((CC->room.QRflags & QR_DIRECTORY) == 0) {
              cprintf("%d No directory in this room.\n",
                     ERROR + NOT_HERE);
              return;
       }

       if (IsEmptyStr(filename)) {
              cprintf("%d You must specify a file name.\n",
                     ERROR + FILE_NOT_FOUND);
              return;
       }
       for (a = 0; !IsEmptyStr(&filename[a]); ++a) {
              if ( (filename[a] == '/') || (filename[a] == '\\') ) {
                     filename[a] = '_';
              }
       }
       snprintf(pathname, sizeof pathname,
                      "%s/%s/%s",
                      ctdl_file_dir,
                      CC->room.QRdirname, filename);
       a = unlink(pathname);
       if (a == 0) {
              cprintf("%d File '%s' deleted.\n", CIT_OK, pathname);
       }
       else {
              cprintf("%d File '%s' not found.\n",
                     ERROR + FILE_NOT_FOUND, pathname);
       }
}

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void cmd_movf ( char *  cmdbuf)

Definition at line 97 of file file_ops.c.

{
       char filename[PATH_MAX];
       char pathname[PATH_MAX];
       char newpath[PATH_MAX];
       char newroom[ROOMNAMELEN];
       char buf[PATH_MAX];
       int a;
       struct ctdlroom qrbuf;

       extract_token(filename, cmdbuf, 0, '|', sizeof filename);
       extract_token(newroom, cmdbuf, 1, '|', sizeof newroom);

       if (CtdlAccessCheck(ac_room_aide)) return;

       if ((CC->room.QRflags & QR_DIRECTORY) == 0) {
              cprintf("%d No directory in this room.\n",
                     ERROR + NOT_HERE);
              return;
       }

       if (IsEmptyStr(filename)) {
              cprintf("%d You must specify a file name.\n",
                     ERROR + FILE_NOT_FOUND);
              return;
       }

       for (a = 0; !IsEmptyStr(&filename[a]); ++a) {
              if ( (filename[a] == '/') || (filename[a] == '\\') ) {
                     filename[a] = '_';
              }
       }
       snprintf(pathname, sizeof pathname, "./files/%s/%s",
               CC->room.QRdirname, filename);
       if (access(pathname, 0) != 0) {
              cprintf("%d File '%s' not found.\n",
                     ERROR + FILE_NOT_FOUND, pathname);
              return;
       }

       if (CtdlGetRoom(&qrbuf, newroom) != 0) {
              cprintf("%d '%s' does not exist.\n", ERROR + ROOM_NOT_FOUND, newroom);
              return;
       }
       if ((qrbuf.QRflags & QR_DIRECTORY) == 0) {
              cprintf("%d '%s' is not a directory room.\n",
                     ERROR + NOT_HERE, qrbuf.QRname);
              return;
       }
       snprintf(newpath, sizeof newpath, "./files/%s/%s", qrbuf.QRdirname,
               filename);
       if (link(pathname, newpath) != 0) {
              cprintf("%d Couldn't move file: %s\n", ERROR + INTERNAL_ERROR,
                     strerror(errno));
              return;
       }
       unlink(pathname);

       /* this is a crude method of copying the file description */
       snprintf(buf, sizeof buf,
               "cat ./files/%s/filedir |grep \"%s\" >>./files/%s/filedir",
               CC->room.QRdirname, filename, qrbuf.QRdirname);
       system(buf);
       cprintf("%d File '%s' has been moved.\n", CIT_OK, filename);
}

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void cmd_ndop ( char *  cmdbuf)

Definition at line 677 of file file_ops.c.

{
       char pathname[256];
       struct stat statbuf;

       if (IsEmptyStr(CC->net_node)) {
              cprintf("%d Not authenticated as a network node.\n",
                     ERROR + NOT_LOGGED_IN);
              return;
       }

       if (CC->download_fp != NULL) {
              cprintf("%d You already have a download file open.\n",
                     ERROR + RESOURCE_BUSY);
              return;
       }

       snprintf(pathname, sizeof pathname, 
                      "%s/%s",
                      ctdl_netout_dir,
                      CC->net_node);

       /* first open the file in append mode in order to create a
        * zero-length file if it doesn't already exist 
        */
       CC->download_fp = fopen(pathname, "a");
       if (CC->download_fp != NULL)
              fclose(CC->download_fp);

       /* now open it */
       CC->download_fp = fopen(pathname, "r");
       if (CC->download_fp == NULL) {
              cprintf("%d cannot open %s: %s\n",
                     ERROR + INTERNAL_ERROR, pathname, strerror(errno));
              return;
       }


       /* set this flag so other routines know that the download file
        * currently open is a network spool file 
        */
       CC->dl_is_net = 1;

       stat(pathname, &statbuf);
       CC->download_fp_total = statbuf.st_size;
       cprintf("%d %ld\n", CIT_OK, (long)statbuf.st_size);
}

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void cmd_nuop ( char *  cmdbuf)

Definition at line 728 of file file_ops.c.

{
       static int seq = 1;

       if (IsEmptyStr(CC->net_node)) {
              cprintf("%d Not authenticated as a network node.\n",
                     ERROR + NOT_LOGGED_IN);
              return;
       }

       if (CC->upload_fp != NULL) {
              cprintf("%d You already have an upload file open.\n",
                     ERROR + RESOURCE_BUSY);
              return;
       }

       snprintf(CC->upl_path, sizeof CC->upl_path,
                      "%s/%s.%04lx.%04x",
                      ctdl_nettmp_dir,
                      CC->net_node, 
                      (long)getpid(), 
                      ++seq);

       CC->upload_fp = fopen(CC->upl_path, "r");
       if (CC->upload_fp != NULL) {
              fclose(CC->upload_fp);
              CC->upload_fp = NULL;
              cprintf("%d '%s' already exists\n",
                     ERROR + ALREADY_EXISTS, CC->upl_path);
              return;
       }

       CC->upload_fp = fopen(CC->upl_path, "w");
       if (CC->upload_fp == NULL) {
              cprintf("%d Cannot open %s: %s\n",
                     ERROR + INTERNAL_ERROR, CC->upl_path, strerror(errno));
              return;
       }

       CC->upload_type = UPL_NET;
       cprintf("%d Ok\n", CIT_OK);
}

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void cmd_oimg ( char *  cmdbuf)

Definition at line 242 of file file_ops.c.

{
       char filename[256];
       char pathname[PATH_MAX];
       char MimeTestBuf[32];
       struct ctdluser usbuf;
       char which_user[USERNAME_SIZE];
       int which_floor;
       int a;
       int rv;

       extract_token(filename, cmdbuf, 0, '|', sizeof filename);

       if (IsEmptyStr(filename)) {
              cprintf("%d You must specify a file name.\n",
                     ERROR + FILE_NOT_FOUND);
              return;
       }

       if (CC->download_fp != NULL) {
              cprintf("%d You already have a download file open.\n",
                     ERROR + RESOURCE_BUSY);
              return;
       }

       if (!strcasecmp(filename, "_userpic_")) {
              extract_token(which_user, cmdbuf, 1, '|', sizeof which_user);
              if (CtdlGetUser(&usbuf, which_user) != 0) {
                     cprintf("%d No such user.\n",
                            ERROR + NO_SUCH_USER);
                     return;
              }
              snprintf(pathname, sizeof pathname, 
                             "%s/%ld",
                             ctdl_usrpic_dir,
                             usbuf.usernum);
       } else if (!strcasecmp(filename, "_floorpic_")) {
              which_floor = extract_int(cmdbuf, 1);
              snprintf(pathname, sizeof pathname,
                             "%s/floor.%d",
                             ctdl_image_dir, which_floor);
       } else if (!strcasecmp(filename, "_roompic_")) {
              assoc_file_name(pathname, sizeof pathname, &CC->room, ctdl_image_dir);
       } else {
              for (a = 0; !IsEmptyStr(&filename[a]); ++a) {
                     filename[a] = tolower(filename[a]);
                     if ( (filename[a] == '/') || (filename[a] == '\\') ) {
                            filename[a] = '_';
                     }
              }
              snprintf(pathname, sizeof pathname,
                             "%s/%s",
                             ctdl_image_dir,
                             filename);
       }

       CC->download_fp = fopen(pathname, "rb");
       if (CC->download_fp == NULL) {
              strcat(pathname, ".gif");
              CC->download_fp = fopen(pathname, "rb");
       }
       if (CC->download_fp == NULL) {
              cprintf("%d Cannot open %s: %s\n",
                     ERROR + FILE_NOT_FOUND, pathname, strerror(errno));
              return;
       }
       rv = fread(&MimeTestBuf[0], 1, 32, CC->download_fp);
       if (rv == -1) {
              cprintf("%d Cannot access %s: %s\n",
                     ERROR + FILE_NOT_FOUND, pathname, strerror(errno));
              return;
       }

       rewind (CC->download_fp);
       OpenCmdResult(pathname, GuessMimeType(&MimeTestBuf[0], 32));
}

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void cmd_open ( char *  cmdbuf)

Definition at line 190 of file file_ops.c.

{
       char filename[256];
       char pathname[PATH_MAX];
       int a;

       extract_token(filename, cmdbuf, 0, '|', sizeof filename);

       if (CtdlAccessCheck(ac_logged_in)) return;

       if ((CC->room.QRflags & QR_DIRECTORY) == 0) {
              cprintf("%d No directory in this room.\n",
                     ERROR + NOT_HERE);
              return;
       }

       if (IsEmptyStr(filename)) {
              cprintf("%d You must specify a file name.\n",
                     ERROR + FILE_NOT_FOUND);
              return;
       }

       if (CC->download_fp != NULL) {
              cprintf("%d You already have a download file open.\n",
                     ERROR + RESOURCE_BUSY);
              return;
       }

       for (a = 0; !IsEmptyStr(&filename[a]); ++a) {
              if ( (filename[a] == '/') || (filename[a] == '\\') ) {
                     filename[a] = '_';
              }
       }

       snprintf(pathname, sizeof pathname,
                      "%s/%s/%s",
                      ctdl_file_dir,
                      CC->room.QRdirname, filename);
       CC->download_fp = fopen(pathname, "r");

       if (CC->download_fp == NULL) {
              cprintf("%d cannot open %s: %s\n",
                     ERROR + INTERNAL_ERROR, pathname, strerror(errno));
              return;
       }

       OpenCmdResult(filename, "application/octet-stream");
}

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void cmd_read ( char *  cmdbuf)

Definition at line 586 of file file_ops.c.

{
       long start_pos;
       size_t bytes;
       char buf[SIZ];
       int rc;

       /* The client will transmit its requested offset and byte count */
       start_pos = extract_long(cmdbuf, 0);
       bytes = extract_int(cmdbuf, 1);
       if ((start_pos < 0) || (bytes <= 0)) {
              cprintf("%d you have to specify a value > 0.\n", ERROR + ILLEGAL_VALUE);
              return;
       }

       if (CC->download_fp == NULL) {
              cprintf("%d You don't have a download file open.\n",
                     ERROR + RESOURCE_NOT_OPEN);
              return;
       }

       /* If necessary, reduce the byte count to the size of our buffer */
       if (bytes > sizeof(buf)) {
              bytes = sizeof(buf);
       }

       rc = fseek(CC->download_fp, start_pos, 0);
       if (rc < 0) {
              cprintf("%d your file is smaller then %ld.\n", ERROR + ILLEGAL_VALUE, start_pos);
              syslog(LOG_ALERT, "your file %s is smaller then %ld. [%s]\n", 
                     CC->upl_path, 
                     start_pos,
                     strerror(errno));

              return;
       }
       bytes = fread(buf, 1, bytes, CC->download_fp);
       if (bytes > 0) {
              /* Tell the client the actual byte count and transmit it */
              cprintf("%d %d\n", BINARY_FOLLOWS, (int)bytes);
              client_write(buf, bytes);
       }
       else {
              cprintf("%d %s\n", ERROR, strerror(errno));
       }
}

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void cmd_ucls ( char *  cmd)

Definition at line 512 of file file_ops.c.

{
       FILE *fp;
       char upload_notice[512];
       static int seq = 0;

       if (CC->upload_fp == NULL) {
              cprintf("%d You don't have an upload file open.\n", ERROR + RESOURCE_NOT_OPEN);
              return;
       }

       fclose(CC->upload_fp);
       CC->upload_fp = NULL;

       if ((!strcasecmp(cmd, "1")) && (CC->upload_type != UPL_FILE)) {
              cprintf("%d Upload completed.\n", CIT_OK);

              if (CC->upload_type == UPL_NET) {
                     char final_filename[PATH_MAX];
                      snprintf(final_filename, sizeof final_filename,
                            "%s/%s.%04lx.%04x",
                            ctdl_netin_dir,
                            CC->net_node,
                            (long)getpid(),
                            ++seq
                     );

                     if (link(CC->upl_path, final_filename) == 0) {
                            unlink(CC->upl_path);
                     }
                     else {
                            syslog(LOG_ALERT, "Cannot link %s to %s: %s\n",
                                   CC->upl_path, final_filename, strerror(errno)
                            );
                     }

                     /* FIXME ... here we need to trigger a network run */
              }

              CC->upload_type = UPL_FILE;
              return;
       }

       if (!strcasecmp(cmd, "1")) {
              cprintf("%d File '%s' saved.\n", CIT_OK, CC->upl_path);
              fp = fopen(CC->upl_filedir, "a");
              if (fp == NULL) {
                     fp = fopen(CC->upl_filedir, "w");
              }
              if (fp != NULL) {
                     fprintf(fp, "%s %s %s\n", CC->upl_file,
                            CC->upl_mimetype,
                            CC->upl_comment);
                     fclose(fp);
              }

              /* put together an upload notice */
              snprintf(upload_notice, sizeof upload_notice,
                     "NEW UPLOAD: '%s'\n %s\n%s\n",
                      CC->upl_file, 
                      CC->upl_comment, 
                      CC->upl_mimetype);
              quickie_message(CC->curr_user, NULL, NULL, CC->room.QRname,
                            upload_notice, 0, NULL);
       } else {
              abort_upl(CC);
              cprintf("%d File '%s' aborted.\n", CIT_OK, CC->upl_path);
       }
}

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void cmd_uimg ( char *  cmdbuf)

Definition at line 387 of file file_ops.c.

{
       int is_this_for_real;
       char basenm[256];
       int which_floor;
       int a;

       if (num_parms(cmdbuf) < 2) {
              cprintf("%d Usage error.\n", ERROR + ILLEGAL_VALUE);
              return;
       }

       is_this_for_real = extract_int(cmdbuf, 0);
       extract_token(CC->upl_mimetype, cmdbuf, 1, '|', sizeof CC->upl_mimetype);
       extract_token(basenm, cmdbuf, 2, '|', sizeof basenm);
       if (CC->upload_fp != NULL) {
              cprintf("%d You already have an upload file open.\n",
                     ERROR + RESOURCE_BUSY);
              return;
       }

       strcpy(CC->upl_path, "");

       for (a = 0; !IsEmptyStr(&basenm[a]); ++a) {
              basenm[a] = tolower(basenm[a]);
              if ( (basenm[a] == '/') || (basenm[a] == '\\') ) {
                     basenm[a] = '_';
              }
       }

       if (CC->user.axlevel >= AxAideU) {
              snprintf(CC->upl_path, sizeof CC->upl_path, 
                             "%s/%s",
                             ctdl_image_dir,
                             basenm);
       }

       if (!strcasecmp(basenm, "_userpic_")) {
              snprintf(CC->upl_path, sizeof CC->upl_path,
                             "%s/%ld.gif",
                             ctdl_usrpic_dir,
                             CC->user.usernum);
       }

       if ((!strcasecmp(basenm, "_floorpic_"))
           && (CC->user.axlevel >= AxAideU)) {
              which_floor = extract_int(cmdbuf, 2);
              snprintf(CC->upl_path, sizeof CC->upl_path,
                             "%s/floor.%d.gif",
                             ctdl_image_dir,
                             which_floor);
       }

       if ((!strcasecmp(basenm, "_roompic_")) && (is_room_aide())) {
              assoc_file_name(CC->upl_path, sizeof CC->upl_path, &CC->room, ctdl_image_dir);
       }

       if (IsEmptyStr(CC->upl_path)) {
              cprintf("%d Higher access required.\n",
                     ERROR + HIGHER_ACCESS_REQUIRED);
              return;
       }

       if (is_this_for_real == 0) {
              cprintf("%d Ok to send image\n", CIT_OK);
              return;
       }

       CC->upload_fp = fopen(CC->upl_path, "wb");
       if (CC->upload_fp == NULL) {
              cprintf("%d Cannot open %s: %s\n",
                     ERROR + INTERNAL_ERROR, CC->upl_path, strerror(errno));
              return;
       }
       cprintf("%d Ok\n", CIT_OK);
       CC->upload_type = UPL_IMAGE;
}

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void cmd_uopn ( char *  cmdbuf)

Definition at line 322 of file file_ops.c.

{
       int a;

       extract_token(CC->upl_file, cmdbuf, 0, '|', sizeof CC->upl_file);
       extract_token(CC->upl_mimetype, cmdbuf, 1, '|', sizeof CC->upl_mimetype);
       extract_token(CC->upl_comment, cmdbuf, 2, '|', sizeof CC->upl_comment);

       if (CtdlAccessCheck(ac_logged_in)) return;

       if ((CC->room.QRflags & QR_DIRECTORY) == 0) {
              cprintf("%d No directory in this room.\n",
                     ERROR + NOT_HERE);
              return;
       }

       if (IsEmptyStr(CC->upl_file)) {
              cprintf("%d You must specify a file name.\n",
                     ERROR + FILE_NOT_FOUND);
              return;
       }

       if (CC->upload_fp != NULL) {
              cprintf("%d You already have a upload file open.\n",
                     ERROR + RESOURCE_BUSY);
              return;
       }

       for (a = 0; !IsEmptyStr(&CC->upl_file[a]); ++a) {
              if ( (CC->upl_file[a] == '/') || (CC->upl_file[a] == '\\') ) {
                     CC->upl_file[a] = '_';
              }
       }
       snprintf(CC->upl_path, sizeof CC->upl_path, 
                      "%s/%s/%s",
                      ctdl_file_dir,
                      CC->room.QRdirname, CC->upl_file);
       snprintf(CC->upl_filedir, sizeof CC->upl_filedir,
                      "%s/%s/filedir", 
                      ctdl_file_dir,
                      CC->room.QRdirname);

       CC->upload_fp = fopen(CC->upl_path, "r");
       if (CC->upload_fp != NULL) {
              fclose(CC->upload_fp);
              CC->upload_fp = NULL;
              cprintf("%d '%s' already exists\n",
                     ERROR + ALREADY_EXISTS, CC->upl_path);
              return;
       }

       CC->upload_fp = fopen(CC->upl_path, "wb");
       if (CC->upload_fp == NULL) {
              cprintf("%d Cannot open %s: %s\n",
                     ERROR + INTERNAL_ERROR, CC->upl_path, strerror(errno));
              return;
       }
       cprintf("%d Ok\n", CIT_OK);
}

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void cmd_writ ( char *  cmdbuf)

Definition at line 637 of file file_ops.c.

{
       int bytes;
       char *buf;
       int rv;

       unbuffer_output();

       bytes = extract_int(cmdbuf, 0);

       if (CC->upload_fp == NULL) {
              cprintf("%d You don't have an upload file open.\n", ERROR + RESOURCE_NOT_OPEN);
              return;
       }
       if (bytes <= 0) {
              cprintf("%d you have to specify a value > 0.\n", ERROR + ILLEGAL_VALUE);
              return;
       }

       if (bytes > 100000) {
              bytes = 100000;
       }

       cprintf("%d %d\n", SEND_BINARY, bytes);
       buf = malloc(bytes + 1);
       client_read(buf, bytes);
       rv = fwrite(buf, bytes, 1, CC->upload_fp);
       if (rv == -1) {
              syslog(LOG_EMERG, "Couldn't write: %s\n",
                     strerror(errno));
       }
       free(buf);
}

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CTDL_MODULE_INIT ( file_ops  )

Definition at line 776 of file file_ops.c.

{
       if (!threading) {

              CtdlRegisterProtoHook(cmd_delf, "DELF", "Delete a file");
              CtdlRegisterProtoHook(cmd_movf, "MOVF", "Move a file");
              CtdlRegisterProtoHook(cmd_open, "OPEN", "Open a download file transfer");
              CtdlRegisterProtoHook(cmd_clos, "CLOS", "Close a download file transfer");
              CtdlRegisterProtoHook(cmd_uopn, "UOPN", "Open an upload file transfer");
              CtdlRegisterProtoHook(cmd_ucls, "UCLS", "Close an upload file transfer");
              CtdlRegisterProtoHook(cmd_read, "READ", "File transfer read operation");
              CtdlRegisterProtoHook(cmd_writ, "WRIT", "File transfer write operation");
              CtdlRegisterProtoHook(cmd_ndop, "NDOP", "Open a network spool file for download");
              CtdlRegisterProtoHook(cmd_nuop, "NUOP", "Open a network spool file for upload");
              CtdlRegisterProtoHook(cmd_oimg, "OIMG", "Open an image file for download");
              CtdlRegisterProtoHook(cmd_uimg, "UIMG", "Upload an image file");
       }
        /* return our Subversion id for the Log */
       return "file_ops";
}

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void OpenCmdResult ( char *  filename,
const char *  mime_type 
)

Definition at line 171 of file file_ops.c.

{
       struct stat statbuf;
       time_t modtime;
       long filesize;

       fstat(fileno(CC->download_fp), &statbuf);
       CC->download_fp_total = statbuf.st_size;
       filesize = (long) statbuf.st_size;
       modtime = (time_t) statbuf.st_mtime;

       cprintf("%d %ld|%ld|%s|%s\n",
              CIT_OK, filesize, (long)modtime, filename, mime_type);
}

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