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More tweaks on Linux and Solaris.
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1 #include <u.h>

2 #include <libc.h>

3 #include <bin.h>

4 #include <httpd.h>

6 typedef struct Error	Error;

8 struct Error

9 {

10 	char	*num;

11 	char	*concise;

12 	char	*verbose;

13 };

15 Error errormsg[] =

16 {

17 	/* HInternal */	{"500 Internal Error", "Internal Error",

18 		"This server could not process your request due to an internal error."},

19 	/* HTempFail */	{"500 Internal Error", "Temporary Failure",

20 		"The object %s is currently inaccessible.<p>Please try again later."},

21 	/* HUnimp */	{"501 Not implemented", "Command not implemented",

22 		"This server does not implement the %s command."},

23 	/* HBadReq */	{"400 Bad Request", "Strange Request",

24 		"Your client sent a query that this server could not understand."},

25 	/* HBadSearch */	{"400 Bad Request", "Inapplicable Search",

26 		"Your client sent a search that cannot be applied to %s."},

27 	/* HNotFound */	{"404 Not Found", "Object not found",

28 		"The object %s does not exist on this server."},

29 	/* HUnauth */	{"403 Forbidden", "Forbidden",

30 		"You are not allowed to see the object %s."},

31 	/* HSyntax */	{"400 Bad Request", "Garbled Syntax",

32 		"Your client sent a query with incoherent syntax."},

33 	/* HNoSearch */	{"403 Forbidden", "Search not supported",

34 		"The object %s does not support the search command."},

35 	/* HNoData */	{"403 Forbidden", "No data supplied",

36 		"Search or forms data must be supplied to %s."},

37 	/* HExpectFail */	{"403 Expectation Failed", "Expectation Failed",

38 		"This server does not support some of your request's expectations."},

39 	/* HUnkVers */	{"501 Not Implemented", "Unknown http version",

40 		"This server does not know how to respond to http version %s."},

41 	/* HBadCont */	{"501 Not Implemented", "Impossible format",

42 		"This server cannot produce %s in any of the formats your client accepts."},

43 	/* HOK */		{"200 OK", "everything is fine"},

44 };

46 /*

47  * write a failure message to the net and exit

48  */

49 int

50 hfail(HConnect *c, int reason, ...)

51 {

52 	Hio *hout;

53 	char makeup[HBufSize];

54 	va_list arg;

55 	int n;

57 	hout = &c->hout;

58 	va_start(arg, reason);

59 	vseprint(makeup, makeup+HBufSize, errormsg[reason].verbose, arg);

60 	va_end(arg);

61 	n = snprint(c->xferbuf, HBufSize, "<head><title>%s</title></head>\n<body><h1>%s</h1>\n%s</body>\n",

62 		errormsg[reason].concise, errormsg[reason].concise, makeup);

64 	hprint(hout, "%s %s\r\n", hversion, errormsg[reason].num);

65 	hprint(hout, "Date: %D\r\n", time(nil));

66 	hprint(hout, "Server: Plan9\r\n");

67 	hprint(hout, "Content-Type: text/html\r\n");

68 	hprint(hout, "Content-Length: %d\r\n", n);

69 	if(c->head.closeit)

70 		hprint(hout, "Connection: close\r\n");

71 	else if(!http11(c))

72 		hprint(hout, "Connection: Keep-Alive\r\n");

73 	hprint(hout, "\r\n");

75 	if(c->req.meth == nil || strcmp(c->req.meth, "HEAD") != 0)

76 		hwrite(hout, c->xferbuf, n);

78 	if(c->replog)

79 		c->replog(c, "Reply: %s\nReason: %s\n", errormsg[reason].num, errormsg[reason].concise);

80 	return hflush(hout);

81 }