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  1. #include <stdio.h>
  2. #include <stdlib.h>
  3.  
  4. //宣言
  5. int GetBoundary( char **reBou );
  6. int GetEXTinHeader( char **reEXT );
  7.  
  8. //メイン関数
  9. int main(void){
  10. 	char *pBoundary = NULL;//バウンダリ文字列の先頭のポインタ
  11. 	int boundaryNum = 0;//バウンダリの文字数
  12. 	char *pEXT = NULL;
  13.  
  14. 	boundaryNum = GetBoundary( &pBoundary );
  15. 	if(boundaryNum == -1) return 0;
  16.  
  17. 	if(GetEXTinHeader(&pEXT) == -1) return 0;
  18.  
  19. 	printf("%s",pEXT);
  20.  
  21. 	return 0;
  22. }
  23.  
  24.  
  25. //引数(バウンダリー文字列を返すポインタ)
  26. //返り値(正常:格納した文字数、不正:-1)
  27. int GetBoundary( char **reBou )
  28. {
  29. 	char boundary[70] = {};
  30. 	int i = 0, tmp = 0;
  31.  
  32. 	while(i<70){
  33. 		tmp = getchar();
  34. 		if( tmp <= 0 ) return -1;
  35. 		if( tmp == '\n' ){
  36. 			*reBou = (char*)malloc(sizeof(char)*(i+1));//reBouにバウンダリの文字数分メモリを確保
  37. 			strncpy(*reBou,boundary,i);//バウンダリ文字列をコピー
  38. 			*(*reBou + i) = '\0';//最後にヌル文字を入れる
  39.  
  40. 			return i;
  41. 		}
  42. 		boundary[i] = tmp;
  43. 		i++;
  44. 	}
  45. 	return -1;
  46. }
  47.  
  48.  
  49. //引数(拡張子を返すポインタ)
  50. //返り値(正常:0、不正:-1)
  51. int GetEXTinHeader( char **reEXT )
  52. {
  53. 	char ext[3] = {};
  54. 	char strTMP[11] = "filename=\"";
  55. 	int j=0, tmp=0;
  56.  
  57. 	for(j=0;j!=46;j++){
  58. 		if(getchar()<=0) return -1;
  59. 	}
  60.  
  61. 	for(j=0;j!=10;j++){
  62. 		if(strTMP[j] != getchar()) return -1;
  63. 	}
  64.  
  65. 	while(1){
  66. 		tmp = getchar();
  67. 		if(tmp <= 0 || tmp == '\n') return -1;
  68. 		if(tmp == '.'){
  69. 			for(j=0;j!=3;j++){
  70. 				tmp = getchar();
  71. 				if(tmp <= 0 || tmp == '\n') return -1;
  72. 				ext[j] = tmp;
  73. 			}
  74. 			if(getchar() == '\"'){
  75. 				*reEXT = (char*)malloc(sizeof(char)*4);
  76. 				strncpy(*reEXT,ext,3);
  77. 				*(*reEXT + 4) = '\0';
  78. 				return 0;
  79. 			}
  80. 		}
  81. 	}
  82. }
Success #stdin #stdout 0s 2428KB
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stdin
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------WebKitFormBoundaryNDBtovEU2Qd7ntvC
Content-Disposition: form-data; name="file1"; filename="てすとん.jpg"
Content-Type: application/octet-stream

this is file
------WebKitFormBoundaryNDBtovEU2Qd7ntvC
Content-Disposition: form-data; name="file2"; filename=""
Content-Type: application/octet-stream


------WebKitFormBoundaryNDBtovEU2Qd7ntvC
Content-Disposition: form-data; name="file3"; filename=""
Content-Type: application/octet-stream


------WebKitFormBoundaryNDBtovEU2Qd7ntvC
Content-Disposition: form-data; name="file4"; filename=""
Content-Type: application/octet-stream


------WebKitFormBoundaryNDBtovEU2Qd7ntvC
Content-Disposition: form-data; name="file5"; filename=""
Content-Type: application/octet-stream


------WebKitFormBoundaryNDBtovEU2Qd7ntvC
stdout
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jpg
https://ideone.com/086gHO
language:
C (gcc 8.3)
created:
9 years ago
visibility:
secret

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