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2719
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1 PROCEDURE httpd
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2
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3 (* HTTPD09 - process one http request, should be spawned by inetd *)
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4
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5
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6 ! This program is free software: you can redistribute it and/or modify
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7 ! it under the terms of the GNU General Public License as published by
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8 ! the Free Software Foundation, either version 3 of the License, or
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9 ! (at your option) any later version.
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10
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11 ! This program is distributed in the hope that it will be useful,
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12 ! but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 ! MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 ! GNU General Public License for more details.
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15
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16
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17 ON ERROR GOTO 99
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18 BASE 0
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19
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20 DIM fp:BYTE
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21 DIM errnum:BYTE
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22 DIM req:STRING[255]
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23 DIM target:STRING[255]
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24 DIM lf:BYTE
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25 DIM cr:BYTE
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26 DIM inbyte:BYTE
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27 DIM buffer(256):BYTE
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28 TYPE RREGISTERS=CC,A,B:BYTE; DP:BYTE; X,Y,U:INTEGER
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29 DIM rregs:RREGISTERS
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30 DIM reqid:BYTE
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31 DIM i,p:INTEGER
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32 DIM httperr:STRING[40]
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33 DIM dent(32):BYTE
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34
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35 lf=10
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36 cr=13
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37
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38 (* turn off echo on the input path *)
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39 (* this will be done by inetd in the future *)
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40
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41 (* get ss.opt *)
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42 rregs.A = 0
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43 rregs.B = 0
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44 rregs.X = ADDR(buffer)
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45 reqid = $8D
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46 RUN SYSCALL(reqid,rregs)
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47
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48 (* set PD.EKO to 0 *)
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49 buffer(4) = 0
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50
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51 (* set ss.opt *)
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52 rregs.A = 0
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53 rregs.B = 0
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54 rregs.X = ADDR(buffer)
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55 reqid = $8E
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56 RUN SYSCALL(reqid,rregs)
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57
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58 (* read headers from client *)
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59 REPEAT
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60
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61 req = ""
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62
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63 REPEAT
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64 GET #0,inbyte
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65 req = req + chr$(inbyte)
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66 UNTIL inbyte = 13 or EOF(#0)
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67
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68 IF LEFT$(req,4) = "GET " THEN
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69 target = req
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70 ENDIF
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71
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72 UNTIL PEEK(ADDR(req)) = 13 OR EOF(#0)
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73
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74 (* just die if stdin is gone.. might help with hung runbs? *)
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75 IF EOF(#0) THEN 99
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76
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77 (* fixup paths *)
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78 IF left$(target,6) = "GET / " THEN
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79 req = "/DD/WWWROOT/index.html"
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80 ELSE
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81 req = mid$(target,5,len(target) - 14)
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82 ENDIF
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83
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84 IF right$(req,1) = "/" THEN
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85 req = left$(req,len(req)-1)
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86 ENDIF
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87
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88 (* "security" checks *)
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89 target = ""
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90 FOR i=1 TO SIZE(req)
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91 inbyte=ASC(MID$(req,i,1))
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92 IF $40<inbyte AND inbyte<$60 THEN
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93 inbyte = inbyte + $20
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94 ENDIF
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95 target=target + CHR$(inbyte)
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96 NEXT i
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97 IF (SUBSTR("..",req) > 0) OR (SUBSTR("/sys/",target) > 0) THEN
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98 httperr = "403 Forbidden"
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99 GOTO 1000
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100 ENDIF
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101
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102 (* /favicon.ico *)
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103 IF (req = "/favicon.ico") THEN
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104 req = "/DD/WWWROOT/favicon.ico"
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105 ENDIF
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106
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107 ON ERROR GOTO 100
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108 OPEN #fp,req:READ
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109 ON ERROR GOTO 50
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110 httperr = "200 OK"
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111 GOSUB 2000
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112
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113 IF RIGHT$(req,4) = ".htm" OR RIGHT$(req,5) = ".html" THEN
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114 PRINT "Content-Type: text/html"
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115 ELSE
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116 IF RIGHT$(req,4) = ".jpg" THEN
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117 PRINT "Content-Type: image/jpeg"
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118 ELSE
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119 IF RIGHT$(req,4) = ".gif" THEN
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120 PRINT "Content-Type: image/gif"
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121 ELSE
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122 IF RIGHT$(req,4) = ".png" THEN
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123 PRINT "Content-Type: image/png"
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124 ELSE
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125 IF RIGHT$(req,4) = ".ico" THEN
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126 PRINT "Content-Type: image/x-icon"
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127 PRINT "Cache-Control: public, max-age=31536000"
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128 ELSE
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129 PRINT "Content-Type: text/plain"
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130 ENDIF
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131 ENDIF
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132 ENDIF
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133 ENDIF
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134 ENDIF
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135
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136 PUT #1,lf
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137
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138 (* send file contents *)
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139 REPEAT
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140
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141 rregs.A = fp
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142 rregs.Y = 256
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143 rregs.X = ADDR(buffer)
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144 reqid = $89
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145 RUN SYSCALL(reqid,rregs)
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146
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147 rregs.A = 1
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148 rregs.X = ADDR(buffer)
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149 reqid = $8A
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150 RUN SYSCALL(reqid,rregs)
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151
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152 UNTIL EOF(#fp)
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153
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154 50 ON ERROR GOTO 99
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155 CLOSE #fp
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156
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157 target = DATE$ + " 200 OK " + req
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158 GOSUB 3000
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159
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160 99 END
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161
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162
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163 100 ON ERROR GOTO 99
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164 errnum := ERR
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165
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166 IF errnum = 214 THEN
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167 (* directory check *)
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168 ON ERROR GOTO 200
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169 OPEN #fp,req:READ+DIR
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170 ON ERROR GOTO 99
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171
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172 httperr = "200 OK"
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173 GOSUB 2000
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174 PRINT "Content-Type: text/html"
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175 PUT #1,lf
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176
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177 PRINT "<HTML><HEAD><TITLE>"
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178 PRINT "Directory of ";req
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179 PRINT "</TITLE></HEAD><BODY>"
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180
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181 PRINT "<H3>Directory of ";req;"</H3>"
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182 PRINT "<HR>"
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183
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184 REPEAT
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185
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186 get #fp,dent
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187
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188 IF dent(0) > 0 THEN
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189
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190 target = ""
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191 inbyte = dent(0)
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192 i = 0
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193 WHILE inbyte < 128 AND i<29 DO
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194
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195 target = target + chr$(inbyte)
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196 i = i + 1
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197 inbyte = dent(i)
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198
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199 ENDWHILE
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200
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201 target = target + chr$(inbyte - 128)
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202
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203 IF target <> "." THEN
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204 PRINT "<A HREF=";req;"/";target;">";target;"</A>"
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205 PRINT "<br>"
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206 ENDIF
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207
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208 ENDIF
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209
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210 UNTIL EOF(#fp)
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211 CLOSE #fp
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212
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213 GOSUB 2100
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214 PRINT "</BODY></HTML>"
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215
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216 target = DATE$ + " 200 OK (dir) " + req
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217 GOSUB 3000
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218 END
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219 ELSE
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220 IF errnum = 216 THEN
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221 httperr = "404 Not Found"
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222 ELSE
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223 IF errnum = 215 THEN
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224 httperr = "400 Bad Request"
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225 ELSE
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226 httperr = "500 Internal Server Error"
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227 ENDIF
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228 ENDIF
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229
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230 GOTO 1000
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231 ENDIF
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232
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233
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234
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235 200 ON ERROR GOTO 99
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236 httperr = "403 Forbidden"
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237 (* error result *)
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238 1000 GOSUB 2000
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239 PRINT "Content-Type: text/html"
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240 PUT #1,lf
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241
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242 PRINT "<HTML>"
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243 PRINT "<HEAD><TITLE>";httperr;"</TITLE></HEAD>"
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244 PRINT "<BODY><H2>";httperr;"</H2>"
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245 GOSUB 2100
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246 PRINT "</BODY></HTML>"
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247 target = DATE$ + " " + httperr + " " + req
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248 GOSUB 3000
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249 END
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250
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251
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252 (* server headers *)
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253 2000 PRINT "HTTP/1.1 ";httperr
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254 PRINT "Server: CoCoHTTPD"
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255 PRINT "Connection: close"
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256 RETURN
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257
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258 (* footer *)
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259 2100 PRINT "<br><HR><font face=Tahoma;Arial;Sans size=2><i>httpd09
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260 version 1.1 - ";DATE$;"</i></font>"
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261 RETURN
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262
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263
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264 (* logging - string to log in target *)
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265 3000 ON ERROR GOTO 3010
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266 CREATE #fp,"/DD/LOG/httpd.log":WRITE
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267 ON ERROR GOTO 3030
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268 GOTO 3020
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269 3010 ON ERROR GOTO 3040
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270 OPEN #fp,"/DD/LOG/httpd.log":WRITE
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271 ON ERROR GOTO 3030
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272 (* getstat ss.siz *)
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273 rregs.A = fp
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274 rregs.B = $02
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275 reqid = $8D
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276 RUN SYSCALL(reqid,rregs)
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277 (* seek to eof *)
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278 rregs.A = fp
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279 reqid = $88
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280 RUN SYSCALL(reqid,rregs)
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281 3020 WRITE #fp,target
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282 3030 ON ERROR GOTO 3040
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283 CLOSE #fp
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284 3040 ON ERROR GOTO 99
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285 RETURN
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