1 2 #include <petscwebclient.h> 3 4 /* 5 These variables identify the code as a PETSc application to Google. 6 7 See - http://stackoverflow.com/questions/4616553/using-oauth-in-free-open-source-software 8 Users can get their own application IDs - https://code.google.com/p/google-apps-manager/wiki/GettingAnOAuthConsoleKey 9 10 */ 11 #define PETSC_GOOGLE_CLIENT_ID "521429262559-i19i57eek8tnt9ftpp4p91rcl0bo9ag5.apps.googleusercontent.com" 12 #define PETSC_GOOGLE_CLIENT_ST "vOds_A71I3_S_aHMq_kZAI0t" 13 14 15 #undef __FUNCT__ 16 #define __FUNCT__ "PetscGoogleDriveRefresh" 17 /*@C 18 PetscGoogleDriveRefresh - Get a new authorization token for accessing Google drive from PETSc from a refresh token 19 20 Not collective, only the first process in the MPI_Comm does anything 21 22 Input Parameters: 23 + comm - MPI communicator 24 . refresh token - obtained with PetscGoogleDriveAuthorize(), if NULL PETSc will first look for one in the options data 25 if not found it will call PetscGoogleDriveAuthorize() 26 - tokensize - size of the output string access_token 27 28 Output Parameter: 29 . access_token - token that can be passed to PetscGoogleDriveUpload() 30 31 Options Database: 32 . -google_refresh_token XXX where XXX was obtained from PetscGoogleDriveAuthorize() 33 34 35 .seealso: PetscURLShorten(), PetscGoogleDriveAuthorize(), PetscGoogleDriveUpload() 36 37 @*/ 38 PetscErrorCode PetscGoogleDriveRefresh(MPI_Comm comm,const char refresh_token[],char access_token[],size_t tokensize) 39 { 40 SSL_CTX *ctx; 41 SSL *ssl; 42 int sock; 43 PetscErrorCode ierr; 44 char buff[8*1024],body[1024]; 45 PetscMPIInt rank; 46 char *refreshtoken = (char*)refresh_token; 47 PetscBool found; 48 49 PetscFunctionBegin; 50 ierr = MPI_Comm_rank(comm,&rank);CHKERRQ(ierr); 51 if (!rank) { 52 if (!refresh_token) { 53 PetscBool set; 54 ierr = PetscMalloc1(512,&refreshtoken);CHKERRQ(ierr); 55 ierr = PetscOptionsGetString(NULL,"-google_refresh_token",refreshtoken,512,&set);CHKERRQ(ierr); 56 if (!set) { 57 ierr = PetscGoogleDriveAuthorize(comm,access_token,refreshtoken,512*sizeof(char));CHKERRQ(ierr); 58 ierr = PetscFree(refreshtoken);CHKERRQ(ierr); 59 PetscFunctionReturn(0); 60 } 61 } 62 ierr = PetscSSLInitializeContext(&ctx);CHKERRQ(ierr); 63 ierr = PetscHTTPSConnect("accounts.google.com",443,ctx,&sock,&ssl);CHKERRQ(ierr); 64 ierr = PetscStrcpy(body,"client_id=");CHKERRQ(ierr); 65 ierr = PetscStrcat(body,PETSC_GOOGLE_CLIENT_ID);CHKERRQ(ierr); 66 ierr = PetscStrcat(body,"&client_secret=");CHKERRQ(ierr); 67 ierr = PetscStrcat(body,PETSC_GOOGLE_CLIENT_ST);CHKERRQ(ierr); 68 ierr = PetscStrcat(body,"&refresh_token=");CHKERRQ(ierr); 69 ierr = PetscStrcat(body,refreshtoken);CHKERRQ(ierr); 70 if (!refresh_token) {ierr = PetscFree(refreshtoken);CHKERRQ(ierr);} 71 ierr = PetscStrcat(body,"&grant_type=refresh_token");CHKERRQ(ierr); 72 73 ierr = PetscHTTPSRequest("POST","accounts.google.com/o/oauth2/token",NULL,"application/x-www-form-urlencoded",body,ssl,buff,sizeof(buff));CHKERRQ(ierr); 74 ierr = PetscSSLDestroyContext(ctx);CHKERRQ(ierr); 75 close(sock); 76 77 ierr = PetscPullJSONValue(buff,"access_token",access_token,tokensize,&found);CHKERRQ(ierr); 78 if (!found) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_LIB,"Google drive did not return access_token"); 79 } 80 PetscFunctionReturn(0); 81 } 82 83 #include <sys/stat.h> 84 85 #undef __FUNCT__ 86 #define __FUNCT__ "PetscGoogleDriveUpload" 87 /*@C 88 PetscGoogleDriveUpload - Loads a file to the Google Drive 89 90 Not collective, only the first process in the MPI_Comm uploads the file 91 92 Input Parameters: 93 + comm - MPI communicator 94 . access_token - obtained with PetscGoogleDriveRefresh(), pass NULL to have PETSc generate one 95 - filename - file to upload; if you upload multiple times it will have different names each time on Google Drive 96 97 Options Database: 98 . -google_refresh_token XXX 99 100 Usage Patterns: 101 With PETSc option -google_refresh_token XXX given 102 PetscGoogleDriveUpload(comm,NULL,filename); will upload file with no user interaction 103 104 Without PETSc option -google_refresh_token XXX given 105 PetscGoogleDriveUpload(comm,NULL,filename); for first use will prompt user to authorize access to Google Drive with their processor 106 107 With PETSc option -google_refresh_token XXX given 108 PetscGoogleDriveRefresh(comm,NULL,access_token,sizeof(access_token)); 109 PetscGoogleDriveUpload(comm,access_token,filename); 110 111 With refresh token entered in some way by the user 112 PetscGoogleDriveRefresh(comm,refresh_token,access_token,sizeof(access_token)); 113 PetscGoogleDriveUpload(comm,access_token,filename); 114 115 PetscGoogleDriveAuthorize(comm,access_token,refresh_token,sizeof(access_token)); 116 PetscGoogleDriveUpload(comm,access_token,filename); 117 118 .seealso: PetscURLShorten(), PetscGoogleDriveAuthorize(), PetscGoogleDriveRefresh() 119 120 @*/ 121 PetscErrorCode PetscGoogleDriveUpload(MPI_Comm comm,const char access_token[],const char filename[]) 122 { 123 SSL_CTX *ctx; 124 SSL *ssl; 125 int sock; 126 PetscErrorCode ierr; 127 char head[1024],buff[8*1024],*body,*title; 128 PetscMPIInt rank; 129 struct stat sb; 130 size_t len,blen,rd; 131 FILE *fd; 132 133 PetscFunctionBegin; 134 ierr = MPI_Comm_rank(comm,&rank);CHKERRQ(ierr); 135 if (!rank) { 136 ierr = PetscStrcpy(head,"Authorization: Bearer ");CHKERRQ(ierr); 137 ierr = PetscStrcat(head,access_token);CHKERRQ(ierr); 138 ierr = PetscStrcat(head,"\r\n");CHKERRQ(ierr); 139 ierr = PetscStrcat(head,"uploadType: multipart\r\n");CHKERRQ(ierr); 140 141 ierr = stat(filename,&sb); 142 if (ierr) SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_FILE_OPEN,"Unable to stat file: %s",filename); 143 len = 1024 + sb.st_size; 144 ierr = PetscMalloc1(len,&body);CHKERRQ(ierr); 145 ierr = PetscStrcpy(body,"--foo_bar_baz\r\n" 146 "Content-Type: application/json\r\n\r\n" 147 "{");CHKERRQ(ierr); 148 ierr = PetscPushJSONValue(body,"title",filename,len);CHKERRQ(ierr); 149 ierr = PetscStrcat(body,",");CHKERRQ(ierr); 150 ierr = PetscPushJSONValue(body,"mimeType","text.html",len);CHKERRQ(ierr); 151 ierr = PetscStrcat(body,",");CHKERRQ(ierr); 152 ierr = PetscPushJSONValue(body,"description","a file",len);CHKERRQ(ierr); 153 ierr = PetscStrcat(body,"}\r\n\r\n" 154 "--foo_bar_baz\r\n" 155 "Content-Type: text/html\r\n\r\n"); 156 ierr = PetscStrlen(body,&blen);CHKERRQ(ierr); 157 fd = fopen (filename, "r"); 158 if (!fd) SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_FILE_OPEN,"Unable to open file: %s",filename); 159 rd = fread (body+blen, sizeof (unsigned char), sb.st_size, fd); 160 if (rd != (size_t) sb.st_size) SETERRQ3(PETSC_COMM_SELF,PETSC_ERR_FILE_OPEN,"Unable to read entire file: %s %d %d",filename,(int)rd,sb.st_size); 161 fclose(fd); 162 body[blen + rd] = 0; 163 ierr = PetscStrcat(body,"\r\n\r\n" 164 "--foo_bar_baz\r\n"); 165 ierr = PetscSSLInitializeContext(&ctx);CHKERRQ(ierr); 166 ierr = PetscHTTPSConnect("www.googleapis.com",443,ctx,&sock,&ssl);CHKERRQ(ierr); 167 ierr = PetscHTTPSRequest("POST","www.googleapis.com/upload/drive/v2/files/",head,"multipart/related; boundary=\"foo_bar_baz\"",body,ssl,buff,sizeof(buff));CHKERRQ(ierr); 168 ierr = PetscFree(body);CHKERRQ(ierr); 169 ierr = PetscSSLDestroyContext(ctx);CHKERRQ(ierr); 170 close(sock); 171 ierr = PetscStrstr(buff,"\"title\"",&title);CHKERRQ(ierr); 172 if (!title) SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_LIB,"Upload of file %s failed",filename); 173 } 174 PetscFunctionReturn(0); 175 } 176 177 #if defined(PETSC_HAVE_UNISTD_H) 178 #include <unistd.h> 179 #endif 180 181 #undef __FUNCT__ 182 #define __FUNCT__ "PetscGoogleDriveAuthorize" 183 /*@C 184 PetscGoogleDriveAuthorize - Get authorization and refresh token for accessing Google drive from PETSc 185 186 Not collective, only the first process in MPI_Comm does anything 187 188 Input Parameters: 189 + comm - the MPI communicator 190 - tokensize - size of the token arrays 191 192 Output Parameters: 193 + access_token - can be used with PetscGoogleDriveUpload() for this one session 194 - refresh_token - can be used for ever to obtain new access_tokens with PetscGoogleDriveRefresh(), guard this like a password 195 it gives access to your Google Drive 196 197 Notes: This call requires stdout and stdin access from process 0 on the MPI communicator 198 199 You can run src/sys/webclient/examples/tutorials/googleobtainrefreshtoken to get a refresh token and then in the future pass it to 200 PETSc programs with -google_refresh_token XXX 201 202 .seealso: PetscGoogleDriveRefresh(), PetscGoogleDriveUpload(), PetscURLShorten() 203 204 @*/ 205 PetscErrorCode PetscGoogleDriveAuthorize(MPI_Comm comm,char access_token[],char refresh_token[],size_t tokensize) 206 { 207 SSL_CTX *ctx; 208 SSL *ssl; 209 int sock; 210 PetscErrorCode ierr; 211 char buff[8*1024],*ptr,body[1024]; 212 PetscMPIInt rank; 213 size_t len; 214 PetscBool found; 215 216 PetscFunctionBegin; 217 ierr = MPI_Comm_rank(comm,&rank);CHKERRQ(ierr); 218 if (!rank) { 219 if (!isatty(fileno(PETSC_STDOUT))) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_USER,"Requires users input/output"); 220 ierr = PetscPrintf(comm,"Cut and paste the following into your browser:\n\n" 221 "https://accounts.google.com/o/oauth2/auth?" 222 "scope=https%%3A%%2F%%2Fwww.googleapis.com%%2Fauth%%2Fdrive.file&" 223 "redirect_uri=urn:ietf:wg:oauth:2.0:oob&" 224 "response_type=code&" 225 "client_id=" 226 PETSC_GOOGLE_CLIENT_ID 227 "\n\n");CHKERRQ(ierr); 228 ierr = PetscPrintf(comm,"Paste the result here:");CHKERRQ(ierr); 229 ptr = fgets(buff, 1024, stdin); 230 if (!ptr) SETERRQ1(PETSC_COMM_SELF, PETSC_ERR_FILE_READ, "Error reading from stdin: %d", errno); 231 ierr = PetscStrlen(buff,&len);CHKERRQ(ierr); 232 buff[len-1] = 0; /* remove carriage return at end of line */ 233 234 ierr = PetscSSLInitializeContext(&ctx);CHKERRQ(ierr); 235 ierr = PetscHTTPSConnect("accounts.google.com",443,ctx,&sock,&ssl);CHKERRQ(ierr); 236 ierr = PetscStrcpy(body,"code=");CHKERRQ(ierr); 237 ierr = PetscStrcat(body,buff);CHKERRQ(ierr); 238 ierr = PetscStrcat(body,"&client_id=");CHKERRQ(ierr); 239 ierr = PetscStrcat(body,PETSC_GOOGLE_CLIENT_ID);CHKERRQ(ierr); 240 ierr = PetscStrcat(body,"&client_secret=");CHKERRQ(ierr); 241 ierr = PetscStrcat(body,PETSC_GOOGLE_CLIENT_ST);CHKERRQ(ierr); 242 ierr = PetscStrcat(body,"&redirect_uri=urn:ietf:wg:oauth:2.0:oob&");CHKERRQ(ierr); 243 ierr = PetscStrcat(body,"grant_type=authorization_code");CHKERRQ(ierr); 244 245 ierr = PetscHTTPSRequest("POST","accounts.google.com/o/oauth2/token",NULL,"application/x-www-form-urlencoded",body,ssl,buff,sizeof(buff));CHKERRQ(ierr); 246 ierr = PetscSSLDestroyContext(ctx);CHKERRQ(ierr); 247 close(sock); 248 249 ierr = PetscPullJSONValue(buff,"access_token",access_token,tokensize,&found);CHKERRQ(ierr); 250 if (!found) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_LIB,"Google drive did not return access_token"); 251 ierr = PetscPullJSONValue(buff,"refresh_token",refresh_token,tokensize,&found);CHKERRQ(ierr); 252 if (!found) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_LIB,"Google drive did not return refresh_token"); 253 254 ierr = PetscPrintf(comm,"Here is your Google refresh token, save it in a save place, in the future you can run PETSc\n");CHKERRQ(ierr); 255 ierr = PetscPrintf(comm,"programs with the option -google_refresh_token %s\n",refresh_token);CHKERRQ(ierr); 256 ierr = PetscPrintf(comm,"to access Google Drive automatically\n");CHKERRQ(ierr); 257 } 258 PetscFunctionReturn(0); 259 } 260 261 262 #undef __FUNCT__ 263 #define __FUNCT__ "PetscURLShorten" 264 /*@C 265 PetscURLShorten - Uses Google's service to get a short url for a long url 266 267 Input Parameters: 268 + url - long URL you want shortened 269 - lenshorturl - length of buffer to contain short URL 270 271 Output Parameter: 272 . shorturl - the shortened URL 273 274 .seealso: PetscGoogleDriveRefresh(), PetscGoogleDriveUpload(), PetscGoogleDriveAuthorize() 275 @*/ 276 PetscErrorCode PetscURLShorten(const char url[],char shorturl[],size_t lenshorturl) 277 { 278 SSL_CTX *ctx; 279 SSL *ssl; 280 int sock; 281 PetscErrorCode ierr; 282 char buff[1024],body[512]; 283 PetscBool found; 284 285 PetscFunctionBegin; 286 ierr = PetscSSLInitializeContext(&ctx);CHKERRQ(ierr); 287 ierr = PetscHTTPSConnect("www.googleapis.com",443,ctx,&sock,&ssl);CHKERRQ(ierr); 288 ierr = PetscStrcpy(body,"{");CHKERRQ(ierr); 289 ierr = PetscPushJSONValue(body,"longUrl",url,sizeof(body)-2);CHKERRQ(ierr); 290 ierr = PetscStrcat(body,"}");CHKERRQ(ierr); 291 ierr = PetscHTTPSRequest("POST","www.googleapis.com/urlshortener/v1/url",NULL,"application/json",body,ssl,buff,sizeof(buff));CHKERRQ(ierr); 292 ierr = PetscSSLDestroyContext(ctx);CHKERRQ(ierr); 293 close(sock); 294 295 ierr = PetscPullJSONValue(buff,"id",shorturl,lenshorturl,&found);CHKERRQ(ierr); 296 if (!found) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_LIB,"Google drive did not return short URL"); 297 PetscFunctionReturn(0); 298 } 299 300