ref: 556618eb07d1ac6e2c629a60acd53c45d53261be
dir: /sys/src/libhttpd/fail.c/
#include <u.h> #include <libc.h> #include <bin.h> #include <httpd.h> typedef struct Error Error; struct Error { char *num; char *concise; char *verbose; }; Error errormsg[] = { [HInternal] {"500 Internal Error", "Internal Error", "This server could not process your request due to an internal error."}, [HTempFail] {"500 Internal Error", "Temporary Failure", "The object %s is currently inaccessible.<p>Please try again later."}, [HUnimp] {"501 Not implemented", "Command not implemented", "This server does not implement the %s command."}, [HUnkVers] {"501 Not Implemented", "Unknown http version", "This server does not know how to respond to http version %s."}, [HBadCont] {"501 Not Implemented", "Impossible format", "This server cannot produce %s in any of the formats your client accepts."}, [HBadReq] {"400 Bad Request", "Strange Request", "Your client sent a query that this server could not understand."}, [HSyntax] {"400 Bad Request", "Garbled Syntax", "Your client sent a query with incoherent syntax."}, [HBadSearch] {"400 Bad Request", "Inapplicable Search", "Your client sent a search that cannot be applied to %s."}, [HNotFound] {"404 Not Found", "Object not found", "The object %s does not exist on this server."}, [HNoSearch] {"403 Forbidden", "Search not supported", "The object %s does not support the search command."}, [HNoData] {"403 Forbidden", "No data supplied", "Search or forms data must be supplied to %s."}, [HExpectFail] {"403 Expectation Failed", "Expectation Failed", "This server does not support some of your request's expectations."}, [HUnauth] {"403 Forbidden", "Forbidden", "You are not allowed to see the object %s."}, [HOK] {"200 OK", "everything is fine"}, }; /* * write a failure message to the net and exit */ int hfail(HConnect *c, int reason, ...) { Hio *hout; char makeup[HBufSize], err[ERRMAX]; va_list arg; int n; rerrstr(err, sizeof err); hout = &c->hout; va_start(arg, reason); vseprint(makeup, makeup+HBufSize, errormsg[reason].verbose, arg); va_end(arg); /* * this additional information has proved useful when debugging * complex http configuration problems. */ n = snprint(c->xferbuf, HBufSize, "<head><title>%s</title></head>\n" "<body><h1>%s</h1>\n%s<p>\n" "errstr: %s<br>\n" "uri host: %s<br>\n" "header host: %s<br>\nactual host: %s\n</body>\n", errormsg[reason].concise, errormsg[reason].concise, makeup, err, (c->req.urihost? c->req.urihost: ""), c->head.host, hmydomain); hprint(hout, "%s %s\r\n", hversion, errormsg[reason].num); hprint(hout, "Date: %D\r\n", time(nil)); hprint(hout, "Server: Plan9\r\n"); hprint(hout, "Content-Type: text/html\r\n"); hprint(hout, "Content-Length: %d\r\n", n); if(c->head.closeit) hprint(hout, "Connection: close\r\n"); else if(!http11(c)) hprint(hout, "Connection: Keep-Alive\r\n"); hprint(hout, "\r\n"); if(c->req.meth == nil || strcmp(c->req.meth, "HEAD") != 0) hwrite(hout, c->xferbuf, n); if(c->replog) c->replog(c, "Reply: %s\nReason: %s\n", errormsg[reason].num, errormsg[reason].concise); return hflush(hout); }