X-Git-Url: http://www.dolda2000.com/gitweb/?a=blobdiff_plain;f=src%2Fdirplex%2Fdirplex.c;h=8b604d2dc945c67717e0e7afb553930b22cd9f35;hb=cf6e7461a8b2fd0d3c2bb1369046adcf71b71187;hp=c31c6cda7a62c175a87b1eb339db28148068edef;hpb=6a7a868e28e79f5502cc4b37578c263f640439c8;p=ashd.git diff --git a/src/dirplex/dirplex.c b/src/dirplex/dirplex.c index c31c6cd..8b604d2 100644 --- a/src/dirplex/dirplex.c +++ b/src/dirplex/dirplex.c @@ -25,6 +25,7 @@ #include #include #include +#include #include #ifdef HAVE_CONFIG_H @@ -41,30 +42,73 @@ time_t now; +static void chinit(void *idata) +{ + char *twd = idata; + + if(twd != NULL) { + /* This should never be able to fail other than for critical + * I/O errors or some such, since the path has already been + * traversed. */ + if(chdir(twd)) + exit(127); + } +} + static void handle(struct hthead *req, int fd, char *path, struct pattern *pat) { struct child *ch; + struct config *ccf; + char *twd; - headappheader(req, "X-Ash-File", path); + if(!strncmp(path, "./", 2)) + path += 2; if(pat->fchild) { + headappheader(req, "X-Ash-File", path); stdforkserve(pat->fchild, req, fd, NULL, NULL); } else { - if((ch = findchild(path, pat->childnm)) == NULL) { + if((ch = findchild(path, pat->childnm, &ccf)) == NULL) { flog(LOG_ERR, "child %s requested, but was not declared", pat->childnm); simpleerror(fd, 500, "Configuration Error", "The server is erroneously configured. Handler %s was requested, but not declared.", pat->childnm); return; } - if(childhandle(ch, req, fd, NULL, NULL)) + if((twd = ccf?ccf->path:NULL) != NULL) { + if(!strcmp(twd, ".")) { + twd = NULL; + } else if(strncmp(path, twd, strlen(twd)) || (path[strlen(twd)] != '/')) { + /* Should be an impossible case under the current (and + * foreseeable) scheme. */ + simpleerror(fd, 500, "Server Error", "An internal server error occurred."); + return; + } else { + path = path + strlen(twd) + 1; + } + } + headappheader(req, "X-Ash-File", path); + if(childhandle(ch, req, fd, chinit, twd)) simpleerror(fd, 500, "Server Error", "The request handler crashed."); } } +static void handle404(struct hthead *req, int fd, char *path) +{ + struct child *ch; + struct config *ccf; + char *tmp; + + tmp = sstrdup(path); + ch = findchild(tmp, ".notfound", &ccf); + if(childhandle(ch, req, fd, chinit, ccf?ccf->path:NULL)) + simpleerror(fd, 500, "Server Error", "The request handler crashed."); + free(tmp); +} + static void handlefile(struct hthead *req, int fd, char *path) { struct pattern *pat; if((pat = findmatch(path, 0, 0)) == NULL) { - simpleerror(fd, 404, "Not Found", "The requested URL has no corresponding resource."); + handle404(req, fd, path); return; } handle(req, fd, path, pat); @@ -155,8 +199,8 @@ static int checkentry(struct hthead *req, int fd, char *path, char *rest, char * char *newpath; int rv; - if(!el == '.') { - simpleerror(fd, 404, "Not Found", "The requested URL has no corresponding resource."); + if(*el == '.') { + handle404(req, fd, sprintf3("%s/", path)); return(1); } if(!stat(sprintf3("%s/%s", path, el), &sb)) { @@ -176,7 +220,7 @@ static int checkentry(struct hthead *req, int fd, char *path, char *rest, char * free(newpath); return(1); } - simpleerror(fd, 404, "Not Found", "The requested URL has no corresponding resource."); + handle404(req, fd, sprintf3("%s/", path)); return(1); } if(!strchr(el, '.') && ((newpath = findfile(path, el, NULL)) != NULL)) { @@ -188,9 +232,34 @@ static int checkentry(struct hthead *req, int fd, char *path, char *rest, char * return(0); } +static int checkdir(struct hthead *req, int fd, char *path, char *rest) +{ + char *cpath; + struct config *cf, *ccf; + struct child *ch; + + cf = getconfig(path); + if(cf->capture != NULL) { + cpath = sprintf2("%s/", path); + if((ch = findchild(cpath, cf->capture, &ccf)) == NULL) { + free(cpath); + flog(LOG_ERR, "child %s requested for capture, but was not declared", cf->capture); + simpleerror(fd, 500, "Configuration Error", "The server is erroneously configured. Handler %s was requested, but not declared.", cf->capture); + return(1); + } + free(cpath); + if(*rest == '/') + rest++; + replrest(req, rest); + if(childhandle(ch, req, fd, chinit, ccf?ccf->path:NULL)) + simpleerror(fd, 500, "Server Error", "The request handler crashed."); + return(1); + } + return(0); +} + static int checkpath(struct hthead *req, int fd, char *path, char *rest) { - struct config *cf; char *p, *el; int rv; @@ -199,7 +268,8 @@ static int checkpath(struct hthead *req, int fd, char *path, char *rest) if(!strncmp(path, "./", 2)) path += 2; - cf = getconfig(path); + if(checkdir(req, fd, path, rest)) + return(1); if((p = strchr(rest, '/')) == NULL) { el = unquoteurl(rest); @@ -217,14 +287,15 @@ static int checkpath(struct hthead *req, int fd, char *path, char *rest) goto out; } if(strchr(el, '/') || (!*el && *rest)) { - simpleerror(fd, 404, "Not Found", "The requested URL has no corresponding resource."); + handle404(req, fd, sprintf3("%s/", path)); rv = 1; goto out; } if(!*el) { replrest(req, rest); handledir(req, fd, path); - return(1); + rv = 1; + goto out; } rv = checkentry(req, fd, path, rest, el); @@ -238,7 +309,20 @@ static void serve(struct hthead *req, int fd) { now = time(NULL); if(!checkpath(req, fd, ".", req->rest)) - simpleerror(fd, 404, "Not Found", "The requested URL has no corresponding resource."); + handle404(req, fd, "."); +} + +static void chldhandler(int sig) +{ + pid_t pid; + + do { + pid = waitpid(-1, NULL, WNOHANG); + } while(pid > 0); +} + +static void sighandler(int sig) +{ } static void usage(FILE *out) @@ -300,7 +384,8 @@ int main(int argc, char **argv) flog(LOG_ERR, "could not change directory to %s: %s", argv[optind], strerror(errno)); exit(1); } - signal(SIGCHLD, SIG_IGN); + signal(SIGCHLD, chldhandler); + signal(SIGPIPE, sighandler); while(1) { if((fd = recvreq(0, &req)) < 0) { if(errno != 0)