1 2 #include <petscwebclient.h> 3 PETSC_PRAGMA_DIAGNOSTIC_IGNORED_BEGIN("-Wdeprecated-declarations") 4 5 /* 6 These variables identify the code as a PETSc application to Google. 7 8 See - https://stackoverflow.com/questions/4616553/using-oauth-in-free-open-source-software 9 Users can get their own application IDs - https://code.google.com/p/google-apps-manager/wiki/GettingAnOAuthConsoleKey 10 11 */ 12 #define PETSC_GOOGLE_CLIENT_ID "521429262559-i19i57eek8tnt9ftpp4p91rcl0bo9ag5.apps.googleusercontent.com" 13 #define PETSC_GOOGLE_CLIENT_ST "vOds_A71I3_S_aHMq_kZAI0t" 14 #define PETSC_GOOGLE_API_KEY "AIzaSyDRZsOcySpWVzsUvIBL2UG3J2tcg-MXbyk" 15 16 /*@C 17 PetscGoogleDriveRefresh - Get a new authorization token for accessing Google drive from PETSc from a refresh token 18 19 Not Collective, only the first process in the `MPI_Comm` does anything 20 21 Input Parameters: 22 + comm - MPI communicator 23 . refresh_token - obtained with `PetscGoogleDriveAuthorize()`, if NULL PETSc will first look for one in the options data 24 if not found it will call `PetscGoogleDriveAuthorize()` 25 - tokensize - size of the output string access_token 26 27 Output Parameter: 28 . access_token - token that can be passed to `PetscGoogleDriveUpload()` 29 30 Options Database Key: 31 . -google_refresh_token XXX - where XXX was obtained from `PetscGoogleDriveAuthorize()` 32 33 Level: intermediate 34 35 .seealso: `PetscGoogleDriveAuthorize()`, `PetscGoogleDriveUpload()` 36 @*/ 37 PetscErrorCode PetscGoogleDriveRefresh(MPI_Comm comm, const char refresh_token[], char access_token[], size_t tokensize) 38 { 39 SSL_CTX *ctx; 40 SSL *ssl; 41 int sock; 42 char buff[8 * 1024], body[1024]; 43 PetscMPIInt rank; 44 char *refreshtoken = (char *)refresh_token; 45 PetscBool found; 46 47 PetscFunctionBegin; 48 PetscCallMPI(MPI_Comm_rank(comm, &rank)); 49 if (rank == 0) { 50 if (!refresh_token) { 51 PetscBool set; 52 PetscCall(PetscMalloc1(512, &refreshtoken)); 53 PetscCall(PetscOptionsGetString(NULL, NULL, "-google_refresh_token", refreshtoken, sizeof(refreshtoken), &set)); 54 if (!set) { 55 PetscCall(PetscGoogleDriveAuthorize(comm, access_token, refreshtoken, 512 * sizeof(char))); 56 PetscCall(PetscFree(refreshtoken)); 57 PetscFunctionReturn(PETSC_SUCCESS); 58 } 59 } 60 PetscCall(PetscSSLInitializeContext(&ctx)); 61 PetscCall(PetscHTTPSConnect("accounts.google.com", 443, ctx, &sock, &ssl)); 62 PetscCall(PetscStrncpy(body, "client_id=", sizeof(body))); 63 PetscCall(PetscStrlcat(body, PETSC_GOOGLE_CLIENT_ID, sizeof(body))); 64 PetscCall(PetscStrlcat(body, "&client_secret=", sizeof(body))); 65 PetscCall(PetscStrlcat(body, PETSC_GOOGLE_CLIENT_ST, sizeof(body))); 66 PetscCall(PetscStrlcat(body, "&refresh_token=", sizeof(body))); 67 PetscCall(PetscStrlcat(body, refreshtoken, sizeof(body))); 68 if (!refresh_token) PetscCall(PetscFree(refreshtoken)); 69 PetscCall(PetscStrlcat(body, "&grant_type=refresh_token", sizeof(body))); 70 71 PetscCall(PetscHTTPSRequest("POST", "accounts.google.com/o/oauth2/token", NULL, "application/x-www-form-urlencoded", body, ssl, buff, sizeof(buff))); 72 PetscCall(PetscSSLDestroyContext(ctx)); 73 close(sock); 74 75 PetscCall(PetscPullJSONValue(buff, "access_token", access_token, tokensize, &found)); 76 PetscCheck(found, PETSC_COMM_SELF, PETSC_ERR_LIB, "Google drive did not return access_token"); 77 } 78 PetscFunctionReturn(PETSC_SUCCESS); 79 } 80 81 #include <sys/stat.h> 82 83 /*@C 84 PetscGoogleDriveUpload - Loads a file to the Google Drive 85 86 Not Collective, only the first process in the `MPI_Comm` uploads the file 87 88 Input Parameters: 89 + comm - MPI communicator 90 . access_token - obtained with PetscGoogleDriveRefresh(), pass `NULL` to have PETSc generate one 91 - filename - file to upload; if you upload multiple times it will have different names each time on Google Drive 92 93 Options Database Key: 94 . -google_refresh_token XXX - pass the access token for the operation 95 96 Example Usage: 97 .vb 98 With PETSc option -google_refresh_token XXX given 99 PetscGoogleDriveUpload(comm,NULL,filename); will upload file with no user interaction 100 101 Without PETSc option -google_refresh_token XXX given 102 PetscGoogleDriveUpload(comm,NULL,filename); for first use will prompt user to authorize access to Google Drive with their browser 103 104 With PETSc option -google_refresh_token XXX given 105 PetscGoogleDriveRefresh(comm,NULL,access_token,sizeof(access_token)); 106 PetscGoogleDriveUpload(comm,access_token,filename); 107 108 With refresh token entered in some way by the user 109 PetscGoogleDriveRefresh(comm,refresh_token,access_token,sizeof(access_token)); 110 PetscGoogleDriveUpload(comm,access_token,filename); 111 112 PetscGoogleDriveAuthorize(comm,access_token,refresh_token,sizeof(access_token)); 113 PetscGoogleDriveUpload(comm,access_token,filename); 114 .ve 115 116 Level: intermediate 117 118 .seealso: `PetscGoogleDriveAuthorize()`, `PetscGoogleDriveRefresh()` 119 @*/ 120 PetscErrorCode PetscGoogleDriveUpload(MPI_Comm comm, const char access_token[], const char filename[]) 121 { 122 SSL_CTX *ctx; 123 SSL *ssl; 124 int sock; 125 char head[1024], buff[8 * 1024], *body, *title; 126 PetscMPIInt rank; 127 struct stat sb; 128 size_t len, blen, rd; 129 FILE *fd; 130 int err; 131 132 PetscFunctionBegin; 133 PetscCallMPI(MPI_Comm_rank(comm, &rank)); 134 if (rank == 0) { 135 PetscCall(PetscStrncpy(head, "Authorization: Bearer ", sizeof(head))); 136 PetscCall(PetscStrlcat(head, access_token, sizeof(head))); 137 PetscCall(PetscStrlcat(head, "\r\n", sizeof(head))); 138 PetscCall(PetscStrlcat(head, "uploadType: multipart\r\n", sizeof(head))); 139 140 err = stat(filename, &sb); 141 PetscCheck(!err, PETSC_COMM_SELF, PETSC_ERR_FILE_OPEN, "Unable to stat file: %s", filename); 142 len = 1024 + sb.st_size; 143 PetscCall(PetscMalloc1(len, &body)); 144 PetscCall(PetscStrncpy(body, 145 "--foo_bar_baz\r\n" 146 "Content-Type: application/json\r\n\r\n" 147 "{", 148 sizeof(body))); 149 PetscCall(PetscPushJSONValue(body, "title", filename, len)); 150 PetscCall(PetscStrlcat(body, ",", sizeof(body))); 151 PetscCall(PetscPushJSONValue(body, "mimeType", "text.html", len)); 152 PetscCall(PetscStrlcat(body, ",", sizeof(body))); 153 PetscCall(PetscPushJSONValue(body, "description", "a file", len)); 154 PetscCall(PetscStrlcat(body, 155 "}\r\n\r\n" 156 "--foo_bar_baz\r\n" 157 "Content-Type: text/html\r\n\r\n", 158 sizeof(body))); 159 PetscCall(PetscStrlen(body, &blen)); 160 fd = fopen(filename, "r"); 161 PetscCheck(fd, PETSC_COMM_SELF, PETSC_ERR_FILE_OPEN, "Unable to open file: %s", filename); 162 rd = fread(body + blen, sizeof(unsigned char), sb.st_size, fd); 163 PetscCheck(rd == (size_t)sb.st_size, PETSC_COMM_SELF, PETSC_ERR_FILE_OPEN, "Unable to read entire file: %s %d %d", filename, (int)rd, (int)sb.st_size); 164 fclose(fd); 165 body[blen + rd] = 0; 166 PetscCall(PetscStrlcat(body, 167 "\r\n\r\n" 168 "--foo_bar_baz\r\n", 169 sizeof(body))); 170 PetscCall(PetscSSLInitializeContext(&ctx)); 171 PetscCall(PetscHTTPSConnect("www.googleapis.com", 443, ctx, &sock, &ssl)); 172 PetscCall(PetscHTTPSRequest("POST", "www.googleapis.com/upload/drive/v2/files/", head, "multipart/related; boundary=\"foo_bar_baz\"", body, ssl, buff, sizeof(buff))); 173 PetscCall(PetscFree(body)); 174 PetscCall(PetscSSLDestroyContext(ctx)); 175 close(sock); 176 PetscCall(PetscStrstr(buff, "\"title\"", &title)); 177 PetscCheck(title, PETSC_COMM_SELF, PETSC_ERR_LIB, "Upload of file %s failed", filename); 178 } 179 PetscFunctionReturn(PETSC_SUCCESS); 180 } 181 182 #if defined(PETSC_HAVE_UNISTD_H) 183 #include <unistd.h> 184 #endif 185 186 /*@C 187 PetscGoogleDriveAuthorize - Get authorization and refresh token for accessing Google drive from PETSc 188 189 Not Collective, only the first process in `MPI_Comm` does anything 190 191 Input Parameters: 192 + comm - the MPI communicator 193 - tokensize - size of the token arrays 194 195 Output Parameters: 196 + access_token - can be used with `PetscGoogleDriveUpload()` for this one session 197 - refresh_token - can be used for ever to obtain new access_tokens with `PetscGoogleDriveRefresh()`, guard this like a password 198 it gives access to your Google Drive 199 200 Level: intermediate 201 202 Notes: 203 This call requires `stdout` and `stdin` access from process 0 on the MPI communicator 204 205 You can run src/sys/webclient/tutorials/googleobtainrefreshtoken to get a refresh token and then in the future pass it to 206 PETSc programs with `-google_refresh_token XXX` 207 208 .seealso: `PetscGoogleDriveRefresh()`, `PetscGoogleDriveUpload()` 209 @*/ 210 PetscErrorCode PetscGoogleDriveAuthorize(MPI_Comm comm, char access_token[], char refresh_token[], size_t tokensize) 211 { 212 SSL_CTX *ctx; 213 SSL *ssl; 214 int sock; 215 char buff[8 * 1024], *ptr, body[1024]; 216 PetscMPIInt rank; 217 size_t len; 218 PetscBool found; 219 220 PetscFunctionBegin; 221 PetscCallMPI(MPI_Comm_rank(comm, &rank)); 222 if (rank == 0) { 223 PetscCheck(isatty(fileno(PETSC_STDOUT)), PETSC_COMM_SELF, PETSC_ERR_USER, "Requires users input/output"); 224 PetscCall(PetscPrintf(comm, "Cut and paste the following into your browser:\n\n" 225 "https://accounts.google.com/o/oauth2/auth?" 226 "scope=https%%3A%%2F%%2Fwww.googleapis.com%%2Fauth%%2Fdrive.file&" 227 "redirect_uri=urn:ietf:wg:oauth:2.0:oob&" 228 "response_type=code&" 229 "client_id=" PETSC_GOOGLE_CLIENT_ID "\n\n")); 230 PetscCall(PetscPrintf(comm, "Paste the result here:")); 231 ptr = fgets(buff, 1024, stdin); 232 PetscCheck(ptr, PETSC_COMM_SELF, PETSC_ERR_FILE_READ, "Error reading from stdin: %d", errno); 233 PetscCall(PetscStrlen(buff, &len)); 234 buff[len - 1] = 0; /* remove carriage return at end of line */ 235 236 PetscCall(PetscSSLInitializeContext(&ctx)); 237 PetscCall(PetscHTTPSConnect("accounts.google.com", 443, ctx, &sock, &ssl)); 238 PetscCall(PetscStrncpy(body, "code=", sizeof(body))); 239 PetscCall(PetscStrlcat(body, buff, sizeof(body))); 240 PetscCall(PetscStrlcat(body, "&client_id=", sizeof(body))); 241 PetscCall(PetscStrlcat(body, PETSC_GOOGLE_CLIENT_ID, sizeof(body))); 242 PetscCall(PetscStrlcat(body, "&client_secret=", sizeof(body))); 243 PetscCall(PetscStrlcat(body, PETSC_GOOGLE_CLIENT_ST, sizeof(body))); 244 PetscCall(PetscStrlcat(body, "&redirect_uri=urn:ietf:wg:oauth:2.0:oob&", sizeof(body))); 245 PetscCall(PetscStrlcat(body, "grant_type=authorization_code", sizeof(body))); 246 247 PetscCall(PetscHTTPSRequest("POST", "accounts.google.com/o/oauth2/token", NULL, "application/x-www-form-urlencoded", body, ssl, buff, sizeof(buff))); 248 PetscCall(PetscSSLDestroyContext(ctx)); 249 close(sock); 250 251 PetscCall(PetscPullJSONValue(buff, "access_token", access_token, tokensize, &found)); 252 PetscCheck(found, PETSC_COMM_SELF, PETSC_ERR_LIB, "Google drive did not return access_token"); 253 PetscCall(PetscPullJSONValue(buff, "refresh_token", refresh_token, tokensize, &found)); 254 PetscCheck(found, PETSC_COMM_SELF, PETSC_ERR_LIB, "Google drive did not return refresh_token"); 255 256 PetscCall(PetscPrintf(comm, "Here is your Google refresh token, save it in a save place, in the future you can run PETSc\n")); 257 PetscCall(PetscPrintf(comm, "programs with the option -google_refresh_token %s\n", refresh_token)); 258 PetscCall(PetscPrintf(comm, "to access Google Drive automatically\n")); 259 } 260 PetscFunctionReturn(PETSC_SUCCESS); 261 } 262