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/* -*-C-*- ******************************************************************************* * * File: XImageURL.m * RCS: $Header: /usr/local/lib/cvs/EnhanceMail/XImageURL.m,v 1.1.1.8 1996/04/09 16:19:00 cedman Exp $ * Description: * Author: Carl Edman * Created: Fri Oct 20 14:47:00 1995 * Modified: Tue Apr 9 11:52:05 1996 (Carl Edman) cedman@capitalist.princeton.edu * Language: C * Package: N/A * Status: Experimental (Do Not Distribute) * * (C) Copyright 1995, but otherwise this file is perfect freeware. * ******************************************************************************* */ #import <libc.h> #import "EnhanceMail.h" #import "XImageURL.h" #import "Preferences.h" #import "regexp.h" #include <netdb.h> #define MSG_OPEN_EXTERNAL_ATTACHMENT NXLoadLocalizedStringFromTableInBundle("Alerts", nil, "Open External Attachment", NULL) #define MSG_RETRIEVE_HTTP NXLocalizedStringFromTableInBundle("Localizable", EnhanceBundle, "Retrieving %s from %s via http...", NULL, Message for HTTP retrieval) #define LOCALCOPY(to,from,len) { to=alloca(len+1); strncpy(to,from,len); to[len]='\0'; } static const char *imagepath[]= { "/tmp", "~/Library/Mail/Images", "/LocalLibrary/Mail/Images", "/NextLibrary/Mail/Images", 0 }; @implementation NXImage(XImageURL) + (BOOL)grabURL:(const char *)url to:(const char *)localpath { static regexp *ftprx=0; static regexp *httprx=0; if (!*url) return NO; if (ftprx==0) ftprx=regcomp("^ftp://([^:/ ]*(:[^/@ ]*)?@)?([^/]*/)(([^/]*/)*)([^/;]*)$"); if (regexec(ftprx,url)) { char *host,*dir,*filename,*user,*pass,*userpass,*path; id fetcher=[MimeFetcher new]; if (ftprx->startp[1]&&ftprx->startp[2]) { LOCALCOPY(user,ftprx->startp[1],ftprx->startp[2]-ftprx->startp[1]); LOCALCOPY(pass,ftprx->startp[2]+1,ftprx->endp[2]-ftprx->startp[2]-1); userpass=alloca(strlen(user)+strlen(pass)+2); sprintf(userpass,"%s %s",user,pass); } else if (ftprx->startp[1]) { LOCALCOPY(user,ftprx->startp[1],ftprx->endp[1]-ftprx->startp[1]-1); userpass=[fetcher anonUserPass]; if (pass=index(userpass,' ')) pass++; else pass="anonymous"; userpass=alloca(strlen(user)+strlen(pass)+2); sprintf(userpass,"%s %s",user,pass); } else userpass=[fetcher anonUserPass]; LOCALCOPY(host, ftprx->startp[3],ftprx->endp[3]-ftprx->startp[3]-1); LOCALCOPY(dir, ftprx->startp[4],ftprx->endp[4]-ftprx->startp[4]-1); LOCALCOPY(filename,ftprx->startp[6],ftprx->endp[6]-ftprx->startp[6]); LOCALCOPY(path,localpath,strlen(localpath)); if ([fetcher ftpFrom:host directory:dir filename:filename mode:"binary" forUserPass:userpass to:path]==NO) return NO; if (access(path,R_OK)!=0) return NO; return YES; } if (httprx==0) httprx=regcomp("^http://([^:/ ]*)(:[0-9]+)?(/[^;]*)$"); if (regexec(httprx,url)) { char *hostname="localhost",*path="/",*port="80"; char buf[1024],*pos; struct sockaddr_in http; struct hostent *hp; int totlen=-1,rcvlen=0,len; int ifd=-1,ofd=-1; BOOL success=NO; Progressor *progress=nil; if (EnhanceHTTPProxy && *EnhanceHTTPProxy) { strcpy(buf,EnhanceHTTPProxy); strcat(buf,url); if (!regexec(httprx,buf)) goto httpend; } if (httprx->startp[1]) LOCALCOPY(hostname,httprx->startp[1],httprx->endp[1]-httprx->startp[1]); if (httprx->startp[2]) LOCALCOPY(port,httprx->startp[2]+1,httprx->endp[2]-httprx->startp[2]-1); if (httprx->startp[3]) LOCALCOPY(path,httprx->startp[3],httprx->endp[3]-httprx->startp[3]); sprintf(buf,MSG_RETRIEVE_HTTP,strrchr(path,'/')+1,hostname); if ((progress=[Progressor newWithTitle:MSG_OPEN_EXTERNAL_ATTACHMENT message:buf])==nil) goto httpend; [progress setShowProgress:NO]; [progress beginModalSession]; if ((hp = gethostbyname(hostname))==0) goto httpend; bzero((char *)&http, sizeof(http)); bcopy(hp->h_addr,(char *)&http.sin_addr,hp->h_length); http.sin_family = hp->h_addrtype; http.sin_port = htons(atoi(port)); if ((ifd=socket(AF_INET, SOCK_STREAM, 0))==-1) goto httpend; if (connect(ifd,(struct sockaddr *) &http,sizeof(http))==-1) goto httpend; sprintf(buf,"GET %s HTTP/1.0\r\nUser-Agent: EnhanceMail/%s\r\nAccept: image/tiff\r\n\r\n",path,EnhanceVersion); write(ifd,buf,strlen(buf)); pos=buf; while(![progress cancelled]&&((len=read(ifd,pos,(buf+sizeof(buf))-pos))>0)) { char *end=pos+len,*c,*d; for(c=buf,d=buf;c<end;c++) { if (*c!='\n') continue; c[0]='\0'; if ((c>buf)&&(c[-1]=='\r')) c[-1]='\0'; if (strncasecmp(d,"HTTP/1.0 ",9)==0) { if (atoi(d+9)!=200) goto httpend; } if (strncasecmp(d,"Content-Length: ",16)==0) { totlen=atoi(d+16); [progress setMinValue:0]; [progress setMaxValue:totlen]; [progress setProgress:0]; [progress setShowProgress:YES]; } if (*d=='\0') { if ((ofd=open(localpath,O_WRONLY|O_CREAT|O_TRUNC,0644))==-1) goto httpend; rcvlen=end-(c+1); write(ofd,c+1,end-(c+1)); [progress setProgress:rcvlen]; while(![progress cancelled]&&((len=read(ifd,buf,sizeof(buf)))>0)) { write(ofd,buf,len); rcvlen+=len; if (totlen>0) [progress setProgress:rcvlen]; } success=(len==0)&&((totlen==rcvlen)||(totlen==-1)); goto httpend; } d=c+1; } pos=buf; if (d>buf) while (d<end) *pos++=*d++; } httpend: if (ifd!=-1) close(ifd); if (ofd!=0) close(ofd); if (progress!=nil) [progress endModalSession]; return success; } return NO; } + (BOOL)grabURL:(const char *)url buffer:(char *)path { int i; char *localname,*c; if (!*url) return NO; localname=strcpy(alloca(strlen(url)+1),url); for(c=localname;*c;c++) if (*c=='/') *c='_'; for(i=0;imagepath[i];i++) { if ((imagepath[i][0]=='~') && (imagepath[i][1]=='/')) { sprintf(path,"%s%s",NXHomeDirectory(),imagepath[i]+1); imagepath[i]=NXUniqueString(path); } sprintf(path,"%s/%s",imagepath[i],localname); if (access(path,R_OK)==0) return YES; } for(i--;i>=0;i--) if (access(imagepath[i],R_OK|W_OK|X_OK)==0) break; if (i<0) return NO; sprintf(path,"%s/%s",imagepath[i],localname); if (![NXImage grabURL:url to:path]) { int fd=open(path,O_WRONLY|O_CREAT|O_TRUNC,0644); if (fd!=-1) close(fd); return NO; } return YES; } - initURL:(const char *)url { char path[MAXPATHLEN+1]; struct stat buf; if (![NXImage grabURL:url buffer:path]) return [self free]; if ((stat(path,&buf)==-1)||(buf.st_size==0)) return [self free]; return [self initFromFile:path]; } @end