From ef83b858837488557ad29f5d9bc39d44564e7a26 Mon Sep 17 00:00:00 2001 From: epoch Date: Sun, 7 Apr 2019 08:44:01 +0000 Subject: added ability to reference environment variables from format magic. removed !chat bullshit. made a successful message_handler not fallback to a generic action handler --- segfault.c | 75 +++++++++++++++++++++++++++++++++++--------------------------- 1 file changed, 43 insertions(+), 32 deletions(-) (limited to 'segfault.c') diff --git a/segfault.c b/segfault.c index e56714f..b5e95c1 100644 --- a/segfault.c +++ b/segfault.c @@ -99,7 +99,7 @@ struct tail { char *shitlist[] = { 0 }; -void message_handler(int fd,char *from,struct user *user,char *msg,int redones); +int message_handler(int fd,char *from,struct user *user,char *msg,int redones); void c_leetuntail(int fd,char *from,char *line,...); //this function isn't with the rest of them because... meh. @@ -132,7 +132,7 @@ void irc_mode(int fd,char *channel,char *mode,char *nick) { } snprintf(hrm,sz,"MODE %s %s %s\r\n",channel,mode,nick); write(fd,hrm,strlen(hrm)); - free(hrm); + free(hrm); } void irc_nick(int fd,char *nick) { @@ -144,7 +144,7 @@ void irc_nick(int fd,char *nick) { } snprintf(hrm,sz,"NICK %s\r\n",nick); write(fd,hrm,strlen(hrm)); - free(hrm); + free(hrm); } void privmsg(int fd,char *who,char *msg) { @@ -216,8 +216,9 @@ char *escahack(char *s) {//for single quotes //try to shorten this up sometime... char *format_magic(int fd,char *from,struct user *user,char *orig_fmt,char *arg) { char *magic[256]; - int i=0,j=1,sz=0,c=1; + int i=0,j=1,sz=0,c=1,d=0; char *output,*fmt,*argCopy; + char *plzhold; char **args,**notargs; char *argN[10],randC[10][2]={"0","1","2","3","4","5","6","7","8","9"}; snprintf(time_str,sizeof(time_str)-1,"%d",time(0)); @@ -247,6 +248,7 @@ char *format_magic(int fd,char *from,struct user *user,char *orig_fmt,char *arg) } magic['r']=-1;//magic! + magic['$']=-2;//more magic! magic['n']=(user->nick?user->nick:"user->nick"); magic['u']=(user->user?user->user:"user->user"); magic['h']=(user->host?user->host:"user->host"); @@ -286,8 +288,19 @@ char *format_magic(int fd,char *from,struct user *user,char *orig_fmt,char *arg) for(j=0,i=0;fmt[i];i++) { if(fmt[i] == '%') { i++; + d=1; if(magic[fmt[i]] == -1) { args[c]=randC[rand()%10]; + } else if(magic[fmt[i]] == -2) { + if((plzhold=strchr(fmt+i+1,'='))) { + *plzhold=0; + args[c]=getenv(fmt+i+1); + if(!args[c]) { args[c]="ENV VAR NOT FOUND"; } + *plzhold='='; + d=(plzhold - (fmt + i - 1)); + } else { + args[c]="BROKEN ENV VAR REFERENCE"; + } } else if(magic[fmt[i]] > 0) { args[c]=magic[fmt[i]]; } else { @@ -300,7 +313,7 @@ char *format_magic(int fd,char *from,struct user *user,char *orig_fmt,char *arg) sz+=strlen(args[c]); sz+=strlen(notargs[c]); c++; - j=i+1; + j=i+d; } } if(!(fmt+j)) exit(69); @@ -499,6 +512,7 @@ void file_tail(int fd,char *from,char *file,char *args,int opt,struct user *user } } + void c_botup(int fd,char *from,...) { char tmp[256]; snprintf(tmp,sizeof(tmp)-1,"botup: %llu",time(0)-start_time); @@ -1071,7 +1085,7 @@ void c_nick(int fd,char *from,char *msg,...) { irc_nick(fd,myuser->nick); } -void message_handler(int fd,char *from,struct user *user,char *msg,int redones) { +int message_handler(int fd,char *from,struct user *user,char *msg,int redones) { struct entry *m; union hack lol; char lambdad; @@ -1114,7 +1128,7 @@ void message_handler(int fd,char *from,struct user *user,char *msg,int redones) } } } - if(snooty && !to_me && !redones) return; + if(snooty && !to_me && !redones) return 1;//eated if(!msg) exit(71); oldcommand=strdup(msg); @@ -1124,6 +1138,12 @@ void message_handler(int fd,char *from,struct user *user,char *msg,int redones) command[strlen(command)-1]=0;//remove the end \x01 *command=';'; } + //access control goes here + if(strcmp(user->host,"127.0.0.1") && //me + strcmp(myuser->nick,user->nick) + ) { + return 1;//I want this to claim eatedness. + } // if(!strncmp(command,"s/",2)) { // command[1]=' '; // } @@ -1150,7 +1170,7 @@ void message_handler(int fd,char *from,struct user *user,char *msg,int redones) if(rand()%1000 == 0 && redones == 0) { privmsg(fd,from,"I don't want to run that command right now."); free(oldcommand); - return; + return 1;//count this as being handled. } //sz=(strlen(command)-strlen(m->original)+strlen(m->target)+1);// what is this used for? //??? why not use args? @@ -1161,23 +1181,9 @@ void message_handler(int fd,char *from,struct user *user,char *msg,int redones) redo=0; free(oldcommand); //printf("message_handler: leaving: msg: %s redones: %d\n",msg,redones); - return; + return 1; } debug_time(fd,from,"finished checking aliases. not found."); - if((m=ht_getnode(&alias,"!chat"))) {//wtf is this for? - if(args) command[strlen(command)]=' ';//turn that null into a space! - command++;// :> - if(debug) { - snprintf(tmp,sizeof(tmp)-1,"using defualt command! '%s' with args '%s'","!chat",command); - privmsg(fd,from,tmp); - } - //redo=format_magic(fd,from,user,"!chat",command); - sz=(strlen("!chat")+strlen(command)+1); - redo=malloc(sz+1); - snprintf(redo,sz,"%s %s","!chat",command); - message_handler(fd,from,user,redo,redones+1); - free(redo); - } redo=0; if(debug) { snprintf(tmp,sizeof(tmp)-1,"command not found: '%s' with args '%s'",command,args); @@ -1188,6 +1194,7 @@ void message_handler(int fd,char *from,struct user *user,char *msg,int redones) privmsg(fd,from,"I don't know if I'll ever get out of this alias hole you're telling me to dig. Fuck this."); } free(oldcommand); + return 0;//I guess we didn't find anyway. let it fall back to generic handlers. //printf("message_handler: leaving: msg: %s redones: %d\n",msg,redones); } @@ -1216,22 +1223,26 @@ void line_handler(int fd,char *line) {//this should be built into the libary? } if((tmp2=ht_getnode(&alias,tmp)) != NULL) { strcat(tmp," "); - int freenick=0,freeuser=0,freehost=0; - if(!user->nick) { if(!(user->nick=strdup("$UNDEF_NICK"))) exit(__LINE__); freenick=1;} - if(!user->user) { if(!(user->user=strdup("$UNDEF_USER"))) exit(__LINE__); freeuser=1;} - if(!user->host) { if(!(user->host=strdup("$UNDEF_HOST"))) exit(__LINE__); freehost=1;} + //int freenick=0,freeuser=0,freehost=0; + //if(!user->nick) { if(!(user->nick=strdup("$UNDEF_NICK"))) exit(__LINE__); freenick=1;} + //if(!user->user) { if(!(user->user=strdup("$UNDEF_USER"))) exit(__LINE__); freeuser=1;} + //if(!user->host) { if(!(user->host=strdup("$UNDEF_HOST"))) exit(__LINE__); freehost=1;} strcat(tmp,line2); - message_handler(fd,"#cmd",user,tmp,1); - if(freenick) free(user->nick); - if(freeuser) free(user->user); - if(freehost) free(user->host); + message_handler(fd,"epoch",myuser,tmp,1); + //if(freenick) free(user->nick); + //if(freeuser) free(user->user); + //if(freehost) free(user->host); } } free(line2); if(a[0] && a[1] && a[2]) { if(!strcmp(a[0],"PRIVMSG") || !strcmp(a[0],"NOTICE")) { if(strcmp(user->nick,myuser->nick)) { - message_handler(fd,*a[1]=='#'?a[1]:user->nick,user,a[2],0); + if(message_handler(fd,*a[1]=='#'?a[1]:user->nick,user,a[2],0)) { + free(user);//we handled this message. don't let it fall into more generic handlers. + free(a); + return; + } } else { if(debug) privmsg(fd,*a[1]=='#'?a[1]:user->nick,"This server has an echo"); -- cgit v1.2.3