forked from KolibriOS/kolibrios
HTTP library: small bugfixes, more comments.
git-svn-id: svn://kolibrios.org@4202 a494cfbc-eb01-0410-851d-a64ba20cac60
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hidnplayr
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67d71e74e1
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@ -113,9 +113,9 @@ lib_init: ;//////////////////////////////////////////////////////////////////;;
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;;================================================================================================;;
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proc HTTP_get URL ;///////////////////////////////////////////////////////////////////////////////;;
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;;------------------------------------------------------------------------------------------------;;
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;? ;;
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;? Initiates a HTTP connection, using 'GET' method. ;;
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;;------------------------------------------------------------------------------------------------;;
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;> _ ;;
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;> URL = pointer to ASCIIZ URL ;;
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;;------------------------------------------------------------------------------------------------;;
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;< eax = 0 (error) / buffer ptr ;;
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;;================================================================================================;;
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@ -202,11 +202,11 @@ endp
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;;================================================================================================;;
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proc HTTP_head URL ;///////////////////////////////////////////////////////////////////////////////;;
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proc HTTP_head URL ;//////////////////////////////////////////////////////////////////////////////;;
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;;------------------------------------------------------------------------------------------------;;
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;? ;;
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;? Initiates a HTTP connection, using 'HEAD' method. ;;
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;;------------------------------------------------------------------------------------------------;;
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;> _ ;;
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;> URL = pointer to ASCIIZ URL ;;
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;;------------------------------------------------------------------------------------------------;;
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;< eax = 0 (error) / buffer ptr ;;
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;;================================================================================================;;
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@ -295,9 +295,11 @@ endp
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;;================================================================================================;;
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proc HTTP_post URL, content_type, content_length ;////////////////////////////////////////////////;;
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;;------------------------------------------------------------------------------------------------;;
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;? ;;
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;? Initiates a HTTP connection, using 'GET' method. ;;
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;;------------------------------------------------------------------------------------------------;;
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;> _ ;;
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;> URL = pointer to ASCIIZ URL ;;
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;> content_type = pointer to ASCIIZ string containing content type ;;
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;> content_length = length of content (in bytes) ;;
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;;------------------------------------------------------------------------------------------------;;
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;< eax = 0 (error) / buffer ptr ;;
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;;================================================================================================;;
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@ -401,9 +403,10 @@ endp
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;;================================================================================================;;
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proc HTTP_process identifier ;////////////////////////////////////////////////////////////////////;;
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;;------------------------------------------------------------------------------------------------;;
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;? ;;
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;? Receive data from the server, parse headers and put data in receive buffer. ;;
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;? To complete a transfer, this procedure must be called over and over again untill it returns 0. ;;
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;;------------------------------------------------------------------------------------------------;;
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;> _ ;;
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;> identifier = pointer to buffer containing http_msg struct. ;;
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;;------------------------------------------------------------------------------------------------;;
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;< eax = -1 (not finished) / 0 finished ;;
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;;================================================================================================;;
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@ -601,9 +604,9 @@ endl
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.chunk_loop:
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mov ecx, [ebp + http_msg.write_ptr]
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sub ecx, [ebp + http_msg.chunk_ptr]
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jb .need_more_data_chunked
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jb .need_more_data_chunked ; TODO: use this ecx !!!
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; TODO: make sure we have the complete chunkline header
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; Chunkline starts here, convert the ASCII hex number into ebx
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mov esi, [ebp + http_msg.chunk_ptr]
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xor ebx, ebx
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.chunk_hexloop:
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@ -625,20 +628,25 @@ endl
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jmp .chunk_hexloop
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.chunk_:
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DEBUGF 1, "got chunk of %u bytes\n", ebx
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;; cmp esi, [ebp + http_msg.chunk_ptr]
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;; je
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; If chunk size is 0, all chunks have been received.
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test ebx, ebx
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jz .got_all_data_chunked ; last chunk, hooray! FIXME: what if it wasnt a valid hex number???
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mov edi, [ebp + http_msg.chunk_ptr] ; we'll need this in about 25 lines...
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add [ebp + http_msg.chunk_ptr], ebx
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; Chunkline ends with a CR, LF or simply LF
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.end_of_chunkline?: ; FIXME: buffer overflow possible!
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.end_of_chunkline?:
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cmp al, 10
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je .end_of_chunkline
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lodsb
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jmp .end_of_chunkline?
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cmp edi, [ebp + http_msg.write_ptr]
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jb .end_of_chunkline?
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jmp .need_more_data
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.end_of_chunkline:
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; Update chunk ptr, and remember old one
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mov edi, [ebp + http_msg.chunk_ptr]
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add [ebp + http_msg.chunk_ptr], ebx
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; Realloc buffer, make it 'chunksize' bigger.
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mov eax, [ebp + http_msg.buffer_length]
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add eax, ebx
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@ -725,17 +733,21 @@ endp
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;;================================================================================================;;
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proc find_header_field identifier, headername ;///////////////////////////////////////////////////;;
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;;------------------------------------------------------------------------------------------------;;
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;? ;;
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;? Find a header field in the received HTTP header ;;
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;;------------------------------------------------------------------------------------------------;;
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;> _ ;;
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;> identifier = ptr to http_msg struct ;;
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;> headername = ptr to ASCIIZ string containg field you want to find (must be in lowercase) ;;
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;;------------------------------------------------------------------------------------------------;;
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;< eax = -1 (error) / 0 ;;
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;< eax = 0 (error) / ptr to content of the HTTP header field ;;
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;;================================================================================================;;
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push ebx ecx edx esi edi
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DEBUGF 1, "Find header field: %s\n", [headername]
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mov ebx, [identifier]
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test [ebx + http_msg.flags], FLAG_GOT_HEADER
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jz .fail
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lea edx, [ebx + http_msg.data]
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mov ecx, edx
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add ecx, [ebx + http_msg.header_length]
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@ -789,16 +801,28 @@ proc find_header_field identifier, headername ;/////////////////////////////////
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endp
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; internal procedures start here:
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;;================================================================================================;;
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;;////////////////////////////////////////////////////////////////////////////////////////////////;;
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;;================================================================================================;;
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;! Internal procedures section ;;
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;;================================================================================================;;
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;;////////////////////////////////////////////////////////////////////////////////////////////////;;
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;;================================================================================================;;
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;;================================================================================================;;
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proc open_connection hostname, port ;/////////////////////////////////////////////////////////////;;
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;;------------------------------------------------------------------------------------------------;;
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;? ;;
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;? Connects to a HTTP server ;;
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;;------------------------------------------------------------------------------------------------;;
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;> _ ;;
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;> hostname = ptr to ASCIIZ hostname ;;
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;> port = port (x86 byte order) ;;
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;;------------------------------------------------------------------------------------------------;;
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;< eax = -1 (error) / 0 ;;
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;< eax = 0 (error) / socketnum ;;
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;;================================================================================================;;
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locals
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@ -869,11 +893,12 @@ endp
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;;================================================================================================;;
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proc parse_url URL ;//////////////////////////////////////////////////////////////////////////////;;
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;;------------------------------------------------------------------------------------------------;;
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;? ;;
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;? Split a given URL into hostname and pageaddr ;;
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;;------------------------------------------------------------------------------------------------;;
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;> _ ;;
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;> URL = ptr to ASCIIZ URL ;;
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;;------------------------------------------------------------------------------------------------;;
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;< eax = -1 (error) / 0 ;;
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;< eax = 0 (error) / ptr to ASCIIZ hostname ;;
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;< ebx = ptr to ASCIIZ pageaddr ;;
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;;================================================================================================;;
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locals
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@ -970,9 +995,16 @@ endl
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endp
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; in: eax = number
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; edi = ptr where to store ascii
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ascii_dec:
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;;================================================================================================;;
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proc ascii_dec ;//////////////////////////////////////////////////////////////////////////////////;;
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;;------------------------------------------------------------------------------------------------;;
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;? Convert eax to ASCII decimal number ;;
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;;------------------------------------------------------------------------------------------------;;
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;> eax = number ;;
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;> edi = ptr where to write ASCII decimal number ;;
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;;------------------------------------------------------------------------------------------------;;
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;< / ;;
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;;================================================================================================;;
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push -'0'
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mov ecx, 10
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@ -994,6 +1026,8 @@ ascii_dec:
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ret
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endp
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;;================================================================================================;;
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;;////////////////////////////////////////////////////////////////////////////////////////////////;;
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